1021012001211 has 12 divisors (see below), whose sum is σ = 1446139260152. Its totient is φ = 640634980608.

The previous prime is 1021012001183. The next prime is 1021012001221. The reversal of 1021012001211 is 1121002101201.

It is not a de Polignac number, because 1021012001211 - 2²⁵ = 1020978446779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021012001221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 588818050 + ... + 588819783.

Almost surely, 2^{1021012001211} is an apocalyptic number.

1021012001211 is a deficient number, since it is larger than the sum of its proper divisors (425127258941).

1021012001211 is a wasteful number, since it uses less digits than its factorization.

1021012001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177637870 (or 1177637853 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1021012001211 its reverse (1121002101201), we get a palindrome (2142014102412).

The spelling of 1021012001211 in words is "one trillion, twenty-one billion, twelve million, one thousand, two hundred eleven".