1210122021020 has 48 divisors (see below), whose sum is σ = 2781136820448. Its totient is φ = 438638453760.

The previous prime is 1210122021007. The next prime is 1210122021107. The reversal of 1210122021020 is 201202210121.

It is a junction number, because it is equal to n+sod(n) for n = 1210122020986 and 1210122021004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8717969 + ... + 8855688.

It is an arithmetic number, because the mean of its divisors is an integer number (57940350426).

Almost surely, 2^{1210122021020} is an apocalyptic number.

1210122021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210122021020 is an abundant number, since it is smaller than the sum of its proper divisors (1571014799428).

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

1210122021020 is a wasteful number, since it uses less digits than its factorization.

1210122021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17573990 (or 17573988 counting only the distinct ones).

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

Adding to 1210122021020 its reverse (201202210121), we get a palindrome (1411324231141).

The spelling of 1210122021020 in words is "one trillion, two hundred ten billion, one hundred twenty-two million, twenty-one thousand, twenty".