2021000121010 has 32 divisors (see below), whose sum is σ = 3923417926512. Its totient is φ = 745113158400.

The previous prime is 2021000120987. The next prime is 2021000121031. The reversal of 2021000121010 is 101210001202.

It can be written as a sum of positive squares in 8 ways, for example, as 1726877207449 + 294122913561 = 1314107^2 + 542331^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11393641 + ... + 11569660.

Almost surely, 2^{2021000121010} is an apocalyptic number.

2021000121010 is a deficient number, since it is larger than the sum of its proper divisors (1902417805502).

2021000121010 is a wasteful number, since it uses less digits than its factorization.

2021000121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22963998.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2021000121010 its reverse (101210001202), we get a palindrome (2122210122212).

The spelling of 2021000121010 in words is "two trillion, twenty-one billion, one hundred twenty-one thousand, ten".