1210212021021 has 32 divisors (see below), whose sum is σ = 1720381420800. Its totient is φ = 754085735424.

The previous prime is 1210212021017. The next prime is 1210212021049. The reversal of 1210212021021 is 1201202120121.

It is not a de Polignac number, because 1210212021021 - 2² = 1210212021017 is a prime.

It is a super-3 number, since 3×1210212021021³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210212021071) 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, 40510536 + ... + 40540398.

It is an arithmetic number, because the mean of its divisors is an integer number (53761919400).

Almost surely, 2^{1210212021021} is an apocalyptic number.

It is an amenable number.

1210212021021 is a deficient number, since it is larger than the sum of its proper divisors (510169399779).

1210212021021 is a wasteful number, since it uses less digits than its factorization.

1210212021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35365.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1210212021021 its reverse (1201202120121), we get a palindrome (2411414141142).

The spelling of 1210212021021 in words is "one trillion, two hundred ten billion, two hundred twelve million, twenty-one thousand, twenty-one".