1000120122021 has 16 divisors (see below), whose sum is σ = 1486246622400. Its totient is φ = 594498647808.

The previous prime is 1000120122013. The next prime is 1000120122047. The reversal of 1000120122021 is 1202210210001.

It is not a de Polignac number, because 1000120122021 - 2³ = 1000120122013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000120121988 and 1000120122006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000120122061) 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, 516056886 + ... + 516058823.

It is an arithmetic number, because the mean of its divisors is an integer number (92890413900).

Almost surely, 2^{1000120122021} is an apocalyptic number.

It is an amenable number.

1000120122021 is a deficient number, since it is larger than the sum of its proper divisors (486126500379).

1000120122021 is a wasteful number, since it uses less digits than its factorization.

1000120122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032115748.

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

Adding to 1000120122021 its reverse (1202210210001), we get a palindrome (2202330332022).

The spelling of 1000120122021 in words is "one trillion, one hundred twenty million, one hundred twenty-two thousand, twenty-one".