220340120402 has 4 divisors (see below), whose sum is σ = 330510180606. Its totient is φ = 110170060200.

The previous prime is 220340120387. The next prime is 220340120419. The reversal of 220340120402 is 204021043022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204021043022 = 2 ⋅102010521511.

It can be written as a sum of positive squares in only one way, i.e., 156411549121 + 63928571281 = 395489^2 + 252841^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55085030099 + ... + 55085030102.

Almost surely, 2^220340120402 is an apocalyptic number.

220340120402 is a deficient number, since it is larger than the sum of its proper divisors (110170060204).

220340120402 is a wasteful number, since it uses less digits than its factorization.

220340120402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110170060203.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 220340120402 its reverse (204021043022), we get a palindrome (424361163424).

The spelling of 220340120402 in words is "two hundred twenty billion, three hundred forty million, one hundred twenty thousand, four hundred two".