202101102120 has 128 divisors (see below), whose sum is σ = 642107658240. Its totient is φ = 50780970240.

The previous prime is 202101102089. The next prime is 202101102233. The reversal of 202101102120 is 21201101202.

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 = 202101102096 and 202101102105.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 361536 + ... + 731375.

It is an arithmetic number, because the mean of its divisors is an integer number (5016466080).

Almost surely, 2^202101102120 is an apocalyptic number.

202101102120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202101102120 is an abundant number, since it is smaller than the sum of its proper divisors (440006556120).

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

202101102120 is a wasteful number, since it uses less digits than its factorization.

202101102120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093015 (or 1093011 counting only the distinct ones).

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

Adding to 202101102120 its reverse (21201101202), we get a palindrome (223302203322).

The spelling of 202101102120 in words is "two hundred two billion, one hundred one million, one hundred two thousand, one hundred twenty".