1021120121210 has 128 divisors (see below), whose sum is σ = 2175890895360. Its totient is φ = 337747968000.

The previous prime is 1021120121167. The next prime is 1021120121233. The reversal of 1021120121210 is 121210211201.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 295375802 + ... + 295379258.

It is an arithmetic number, because the mean of its divisors is an integer number (16999147620).

Almost surely, 2^{1021120121210} is an apocalyptic number.

1021120121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021120121210 is an abundant number, since it is smaller than the sum of its proper divisors (1154770774150).

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

1021120121210 is a wasteful number, since it uses less digits than its factorization.

1021120121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4632.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1021120121210 its reverse (121210211201), we get a palindrome (1142330332411).

The spelling of 1021120121210 in words is "one trillion, twenty-one billion, one hundred twenty million, one hundred twenty-one thousand, two hundred ten".