2123322221402 has 16 divisors (see below), whose sum is σ = 3208947297192. Its totient is φ = 1053676581120.

The previous prime is 2123322221389. The next prime is 2123322221453. The reversal of 2123322221402 is 2041222233212.

It can be written as a sum of positive squares in 4 ways, for example, as 2099285129881 + 24037091521 = 1448891^2 + 155039^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368702 + ... + 2093462.

Almost surely, 2^{2123322221402} is an apocalyptic number.

2123322221402 is a deficient number, since it is larger than the sum of its proper divisors (1085625075790).

2123322221402 is a wasteful number, since it uses less digits than its factorization.

2123322221402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729393.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 2123322221402 its reverse (2041222233212), we get a palindrome (4164544454614).

The spelling of 2123322221402 in words is "two trillion, one hundred twenty-three billion, three hundred twenty-two million, two hundred twenty-one thousand, four hundred two".