101211220220 has 24 divisors (see below), whose sum is σ = 231865705008. Its totient is φ = 36804080000.

The previous prime is 101211220207. The next prime is 101211220223. The reversal of 101211220220 is 22022112101.

It is a super-2 number, since 2×101211220220² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101211220195 and 101211220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101211220223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230025281 + ... + 230025720.

It is an arithmetic number, because the mean of its divisors is an integer number (9661071042).

Almost surely, 2^101211220220 is an apocalyptic number.

101211220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101211220220 is an abundant number, since it is smaller than the sum of its proper divisors (130654484788).

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

101211220220 is a wasteful number, since it uses less digits than its factorization.

101211220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460051021 (or 460051019 counting only the distinct ones).

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

Adding to 101211220220 its reverse (22022112101), we get a palindrome (123233332321).

The spelling of 101211220220 in words is "one hundred one billion, two hundred eleven million, two hundred twenty thousand, two hundred twenty".