1021020132220 has 48 divisors (see below), whose sum is σ = 2362223406816. Its totient is φ = 367604000000.

The previous prime is 1021020132211. The next prime is 1021020132229. The reversal of 1021020132220 is 222310201201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1021020132211) and next prime (1021020132229).

It is a super-2 number, since 2×1021020132220² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021020132194 and 1021020132203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021020132229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22953031 + ... + 22997470.

It is an arithmetic number, because the mean of its divisors is an integer number (49212987642).

Almost surely, 2^{1021020132220} is an apocalyptic number.

1021020132220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021020132220 is an abundant number, since it is smaller than the sum of its proper divisors (1341203274596).

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

1021020132220 is a wasteful number, since it uses less digits than its factorization.

1021020132220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45950622 (or 45950620 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1021020132220 its reverse (222310201201), we get a palindrome (1243330333421).

The spelling of 1021020132220 in words is "one trillion, twenty-one billion, twenty million, one hundred thirty-two thousand, two hundred twenty".