2021220132030 has 128 divisors (see below), whose sum is σ = 5888923223040. Its totient is φ = 489241918080.

The previous prime is 2021220132023. The next prime is 2021220132037. The reversal of 2021220132030 is 302310221202.

It is an interprime number because it is at equal distance from previous prime (2021220132023) and next prime (2021220132037).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2021220131994 and 2021220132012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021220132037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1418319 + ... + 2460501.

It is an arithmetic number, because the mean of its divisors is an integer number (46007212680).

Almost surely, 2^{2021220132030} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021220132030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2944461611520).

2021220132030 is an abundant number, since it is smaller than the sum of its proper divisors (3867703091010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021220132030 is a wasteful number, since it uses less digits than its factorization.

2021220132030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042863 (or 1042857 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 2021220132030 its reverse (302310221202), we get a palindrome (2323530353232).

The spelling of 2021220132030 in words is "two trillion, twenty-one billion, two hundred twenty million, one hundred thirty-two thousand, thirty".