1210310221021 has 8 divisors (see below), whose sum is σ = 1320574644288. Its totient is φ = 1100085168000.

The previous prime is 1210310221013. The next prime is 1210310221033. The reversal of 1210310221021 is 1201220130121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1210310221021 - 2³ = 1210310221013 is a prime.

It is a super-2 number, since 2×1210310221021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210310220986 and 1210310221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210310221321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9778260 + ... + 9901261.

It is an arithmetic number, because the mean of its divisors is an integer number (165071830536).

Almost surely, 2^{1210310221021} is an apocalyptic number.

1210310221021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210310221021 is a deficient number, since it is larger than the sum of its proper divisors (110264423267).

1210310221021 is a wasteful number, since it uses less digits than its factorization.

1210310221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19685123.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1210310221021 its reverse (1201220130121), we get a palindrome (2411530351142).

The spelling of 1210310221021 in words is "one trillion, two hundred ten billion, three hundred ten million, two hundred twenty-one thousand, twenty-one".