101220021111220 has 48 divisors (see below), whose sum is σ = 231886598078016. Its totient is φ = 36807164288000.

The previous prime is 101220021111169. The next prime is 101220021111229. The reversal of 101220021111220 is 22111120022101.

It is a junction number, because it is equal to n+sod(n) for n = 101220021111194 and 101220021111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101220021111229) 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, 102397935 + ... + 103381705.

It is an arithmetic number, because the mean of its divisors is an integer number (4830970793292).

Almost surely, 2^{101220021111220} is an apocalyptic number.

101220021111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101220021111220 is an abundant number, since it is smaller than the sum of its proper divisors (130666576966796).

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

101220021111220 is a wasteful number, since it uses less digits than its factorization.

101220021111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451472 (or 1451470 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 101220021111220 its reverse (22111120022101), we get a palindrome (123331141133321).

The spelling of 101220021111220 in words is "one hundred one trillion, two hundred twenty billion, twenty-one million, one hundred eleven thousand, two hundred twenty".