1202112112021 has 4 divisors (see below), whose sum is σ = 1204309758112. Its totient is φ = 1199914465932.

The previous prime is 1202112111989. The next prime is 1202112112031.

1202112112021 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1202112112021 - 2⁵ = 1202112111989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202112111986 and 1202112112004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202112112031) 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 3 ways as a sum of consecutive naturals, for example, 1098822225 + ... + 1098823318.

It is an arithmetic number, because the mean of its divisors is an integer number (301077439528).

Almost surely, 2^{1202112112021} is an apocalyptic number.

It is an amenable number.

1202112112021 is a deficient number, since it is larger than the sum of its proper divisors (2197646091).

1202112112021 is an equidigital number, since it uses as much as digits as its factorization.

1202112112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197646090.

The product of its (nonzero) digits is 32, while the sum is 16.

The spelling of 1202112112021 in words is "one trillion, two hundred two billion, one hundred twelve million, one hundred twelve thousand, twenty-one".