1210020211021 has 8 divisors (see below), whose sum is σ = 1221530575104. Its totient is φ = 1198513583520.

The previous prime is 1210020210953. The next prime is 1210020211051. The reversal of 1210020211021 is 1201120200121.

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 1210020211021 - 2²⁵ = 1209986656589 is a prime.

It is a super-2 number, since 2×1210020211021² (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 = 1210020210992 and 1210020211010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210020211051) 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, 281245 + ... + 1580866.

It is an arithmetic number, because the mean of its divisors is an integer number (152691321888).

Almost surely, 2^{1210020211021} is an apocalyptic number.

It is an amenable number.

1210020211021 is a deficient number, since it is larger than the sum of its proper divisors (11510364083).

1210020211021 is a wasteful number, since it uses less digits than its factorization.

1210020211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868291.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1210020211021 its reverse (1201120200121), we get a palindrome (2411140411142).

The spelling of 1210020211021 in words is "one trillion, two hundred ten billion, twenty million, two hundred eleven thousand, twenty-one".