220121011002020 has 12 divisors (see below), whose sum is σ = 462254123104284. Its totient is φ = 88048404400800.

The previous prime is 220121011001959. The next prime is 220121011002041. The reversal of 220121011002020 is 20200110121022.

It can be written as a sum of positive squares in 2 ways, for example, as 22811398672384 + 197309612329636 = 4776128^2 + 14046694^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220121011001986 and 220121011002004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5503025275031 + ... + 5503025275070.

It is an arithmetic number, because the mean of its divisors is an integer number (38521176925357).

Almost surely, 2^{220121011002020} is an apocalyptic number.

220121011002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220121011002020 is an abundant number, since it is smaller than the sum of its proper divisors (242133112102264).

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

220121011002020 is a wasteful number, since it uses less digits than its factorization.

220121011002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11006050550110 (or 11006050550108 counting only the distinct ones).

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

Adding to 220121011002020 its reverse (20200110121022), we get a palindrome (240321121123042).

The spelling of 220121011002020 in words is "two hundred twenty trillion, one hundred twenty-one billion, eleven million, two thousand, twenty".