2121012402 has 16 divisors (see below), whose sum is σ = 4242484512. Its totient is φ = 706927520.

The previous prime is 2121012401. The next prime is 2121012403. The reversal of 2121012402 is 2042101212.

2121012402 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2121012401) and next prime (2121012403).

It is not an unprimeable number, because it can be changed into a prime (2121012401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81577 + ... + 104387.

It is an arithmetic number, because the mean of its divisors is an integer number (265155282).

Almost surely, 2^2121012402 is an apocalyptic number.

2121012402 is an abundant number, since it is smaller than the sum of its proper divisors (2121472110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121012402 is a wasteful number, since it uses less digits than its factorization.

2121012402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38313.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2121012402 is about 46054.4504038426. The cubic root of 2121012402 is about 1284.8361163111.

Adding to 2121012402 its reverse (2042101212), we get a palindrome (4163113614).

The spelling of 2121012402 in words is "two billion, one hundred twenty-one million, twelve thousand, four hundred two".