1021211010120 has 64 divisors (see below), whose sum is σ = 3501294894720. Its totient is φ = 233419659264.

The previous prime is 1021211010109. The next prime is 1021211010199. The reversal of 1021211010120 is 210101121201.

1021211010120 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1021211010096 and 1021211010105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 607862857 + ... + 607864536.

It is an arithmetic number, because the mean of its divisors is an integer number (54707732730).

Almost surely, 2^{1021211010120} is an apocalyptic number.

1021211010120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021211010120 is an abundant number, since it is smaller than the sum of its proper divisors (2480083884600).

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

1021211010120 is a wasteful number, since it uses less digits than its factorization.

1021211010120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215727414 (or 1215727410 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1021211010120 its reverse (210101121201), we get a palindrome (1231312131321).

The spelling of 1021211010120 in words is "one trillion, twenty-one billion, two hundred eleven million, ten thousand, one hundred twenty".