1210121003021 has 32 divisors (see below), whose sum is σ = 1515145824000. Its totient is φ = 942380393472.

The previous prime is 1210121002999. The next prime is 1210121003041. The reversal of 1210121003021 is 1203001210121.

It is not a de Polignac number, because 1210121003021 - 2²² = 1210116808717 is a prime.

It is a super-2 number, since 2×1210121003021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1210121002987 and 1210121003005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210121003041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18668615 + ... + 18733323.

It is an arithmetic number, because the mean of its divisors is an integer number (47348307000).

Almost surely, 2^{1210121003021} is an apocalyptic number.

It is an amenable number.

1210121003021 is a deficient number, since it is larger than the sum of its proper divisors (305024820979).

1210121003021 is a wasteful number, since it uses less digits than its factorization.

1210121003021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70181.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1210121003021 its reverse (1203001210121), we get a palindrome (2413122213142).

The spelling of 1210121003021 in words is "one trillion, two hundred ten billion, one hundred twenty-one million, three thousand, twenty-one".