101221331122020 has 48 divisors (see below), whose sum is σ = 283489006667328. Its totient is φ = 26985756915840.

The previous prime is 101221331122013. The next prime is 101221331122027. The reversal of 101221331122020 is 20221133122101.

It is an interprime number because it is at equal distance from previous prime (101221331122013) and next prime (101221331122027).

It is a super-2 number, since 2×101221331122020² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101221331122027) 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, 205941559 + ... + 206432478.

It is an arithmetic number, because the mean of its divisors is an integer number (5906020972236).

Almost surely, 2^{101221331122020} is an apocalyptic number.

101221331122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101221331122020 is an abundant number, since it is smaller than the sum of its proper divisors (182267675545308).

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

101221331122020 is a wasteful number, since it uses less digits than its factorization.

101221331122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412378140 (or 412378138 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 101221331122020 its reverse (20221133122101), we get a palindrome (121442464244121).

The spelling of 101221331122020 in words is "one hundred one trillion, two hundred twenty-one billion, three hundred thirty-one million, one hundred twenty-two thousand, twenty".