102021000101220 has 48 divisors (see below), whose sum is σ = 293379308405568. Its totient is φ = 26470313539200.

The previous prime is 102021000101203. The next prime is 102021000101227. The reversal of 102021000101220 is 22101000120201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 102021000101196 and 102021000101205.

It is not an unprimeable number, because it can be changed into a prime (102021000101227) 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, 22977700506 + ... + 22977704945.

It is an arithmetic number, because the mean of its divisors is an integer number (6112068925116).

Almost surely, 2^{102021000101220} is an apocalyptic number.

102021000101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102021000101220 is an abundant number, since it is smaller than the sum of its proper divisors (191358308304348).

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

102021000101220 is a wasteful number, since it uses less digits than its factorization.

102021000101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45955405500 (or 45955405498 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102021000101220 its reverse (22101000120201), we get a palindrome (124122000221421).

The spelling of 102021000101220 in words is "one hundred two trillion, twenty-one billion, one hundred one thousand, two hundred twenty".