202101002101220 has 96 divisors (see below), whose sum is σ = 440856764812800. Its totient is φ = 77774376835584.

The previous prime is 202101002101169. The next prime is 202101002101231. The reversal of 202101002101220 is 22101200101202.

It is a junction number, because it is equal to n+sod(n) for n = 202101002101195 and 202101002101204.

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, 20758421 + ... + 28898339.

It is an arithmetic number, because the mean of its divisors is an integer number (4592257966800).

Almost surely, 2^{202101002101220} is an apocalyptic number.

202101002101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202101002101220 is an abundant number, since it is smaller than the sum of its proper divisors (238755762711580).

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

202101002101220 is a wasteful number, since it uses less digits than its factorization.

202101002101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8140437 (or 8140435 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 202101002101220 its reverse (22101200101202), we get a palindrome (224202202202422).

The spelling of 202101002101220 in words is "two hundred two trillion, one hundred one billion, two million, one hundred one thousand, two hundred twenty".