10101210021220 has 24 divisors (see below), whose sum is σ = 21212603241984. Its totient is φ = 4040472161376.

The previous prime is 10101210021211. The next prime is 10101210021257. The reversal of 10101210021220 is 2212001210101.

It is a self number, because there is not a number n which added to its sum of digits gives 10101210021220.

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, 10177917 + ... + 11126203.

It is an arithmetic number, because the mean of its divisors is an integer number (883858468416).

Almost surely, 2^{10101210021220} is an apocalyptic number.

10101210021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10101210021220 is an abundant number, since it is smaller than the sum of its proper divisors (11111393220764).

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

10101210021220 is a wasteful number, since it uses less digits than its factorization.

10101210021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480899 (or 1480897 counting only the distinct ones).

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

Adding to 10101210021220 its reverse (2212001210101), we get a palindrome (12313211231321).

The spelling of 10101210021220 in words is "ten trillion, one hundred one billion, two hundred ten million, twenty-one thousand, two hundred twenty".