1222852402 has 4 divisors (see below), whose sum is σ = 1834278606. Its totient is φ = 611426200.

The previous prime is 1222852391. The next prime is 1222852453. The reversal of 1222852402 is 2042582221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2042582221 = 379 ⋅5389399.

It can be written as a sum of positive squares in only one way, i.e., 793492561 + 429359841 = 28169^2 + 20721^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305713099 + ... + 305713102.

Almost surely, 2^1222852402 is an apocalyptic number.

1222852402 is a deficient number, since it is larger than the sum of its proper divisors (611426204).

1222852402 is an equidigital number, since it uses as much as digits as its factorization.

1222852402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611426203.

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 1222852402 is about 34969.3065701910. The cubic root of 1222852402 is about 1069.3618350869.

The spelling of 1222852402 in words is "one billion, two hundred twenty-two million, eight hundred fifty-two thousand, four hundred two".