10101221210020 has 24 divisors (see below), whose sum is σ = 22329015307200. Its totient is φ = 3827831195232.

The previous prime is 10101221209999. The next prime is 10101221210051. The reversal of 10101221210020 is 2001212210101.

It is a super-5 number, since 5×10101221210020⁵ (a number of 66 digits) contains 55555 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13291080160 + ... + 13291080919.

It is an arithmetic number, because the mean of its divisors is an integer number (930375637800).

Almost surely, 2^{10101221210020} is an apocalyptic number.

10101221210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10101221210020 is an abundant number, since it is smaller than the sum of its proper divisors (12227794097180).

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

10101221210020 is a wasteful number, since it uses less digits than its factorization.

10101221210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26582161107 (or 26582161105 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10101221210020 its reverse (2001212210101), we get a palindrome (12102433420121).

The spelling of 10101221210020 in words is "ten trillion, one hundred one billion, two hundred twenty-one million, two hundred ten thousand, twenty".