1210200112021 has 16 divisors (see below), whose sum is σ = 1256661485568. Its totient is φ = 1164222316800.

The previous prime is 1210200111983. The next prime is 1210200112049. The reversal of 1210200112021 is 1202110020121.

It is a cyclic number.

It is not a de Polignac number, because 1210200112021 - 2¹⁹ = 1210199587733 is a prime.

It is a super-2 number, since 2×1210200112021² (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 = 1210200111992 and 1210200112010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210200112061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3537501 + ... + 3864493.

It is an arithmetic number, because the mean of its divisors is an integer number (78541342848).

Almost surely, 2^{1210200112021} is an apocalyptic number.

It is an amenable number.

1210200112021 is a deficient number, since it is larger than the sum of its proper divisors (46461373547).

1210200112021 is a wasteful number, since it uses less digits than its factorization.

1210200112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327732.

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

Adding to 1210200112021 its reverse (1202110020121), we get a palindrome (2412310132142).

The spelling of 1210200112021 in words is "one trillion, two hundred ten billion, two hundred million, one hundred twelve thousand, twenty-one".