1000120212021 has 64 divisors (see below), whose sum is σ = 1567386777600. Its totient is φ = 555512380416.

The previous prime is 1000120211957. The next prime is 1000120212061. The reversal of 1000120212021 is 1202120210001.

It is not a de Polignac number, because 1000120212021 - 2⁶ = 1000120211957 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1000120211988 and 1000120212006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000120212061) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29175790 + ... + 29210048.

It is an arithmetic number, because the mean of its divisors is an integer number (24490418400).

Almost surely, 2^{1000120212021} is an apocalyptic number.

It is an amenable number.

1000120212021 is a deficient number, since it is larger than the sum of its proper divisors (567266565579).

1000120212021 is a wasteful number, since it uses less digits than its factorization.

1000120212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34618.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1000120212021 its reverse (1202120210001), we get a palindrome (2202240422022).

The spelling of 1000120212021 in words is "one trillion, one hundred twenty million, two hundred twelve thousand, twenty-one".