2021121211230 has 96 divisors (see below), whose sum is σ = 5930311851360. Its totient is φ = 473073296640.

The previous prime is 2021121211211. The next prime is 2021121211247. The reversal of 2021121211230 is 321121211202.

2021121211230 is a `hidden beast` number, since 2 + 0 + 211 + 212 + 11 + 230 = 666.

It is a super-2 number, since 2×2021121211230² (a number of 25 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 35170197 + ... + 35227616.

It is an arithmetic number, because the mean of its divisors is an integer number (61774081785).

Almost surely, 2^{2021121211230} is an apocalyptic number.

2021121211230 is an abundant number, since it is smaller than the sum of its proper divisors (3909190640130).

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

2021121211230 is a wasteful number, since it uses less digits than its factorization.

2021121211230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70397866 (or 70397863 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2021121211230 its reverse (321121211202), we get a palindrome (2342242422432).

The spelling of 2021121211230 in words is "two trillion, twenty-one billion, one hundred twenty-one million, two hundred eleven thousand, two hundred thirty".