22511401240402 has 4 divisors (see below), whose sum is σ = 33767101860606. Its totient is φ = 11255700620200.

The previous prime is 22511401240313. The next prime is 22511401240487. The reversal of 22511401240402 is 20404210411522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16171424719641 + 6339976520761 = 4021371^2 + 2517931^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5627850310099 + ... + 5627850310102.

Almost surely, 2^{22511401240402} is an apocalyptic number.

22511401240402 is a deficient number, since it is larger than the sum of its proper divisors (11255700620204).

22511401240402 is a wasteful number, since it uses less digits than its factorization.

22511401240402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11255700620203.

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

Adding to 22511401240402 its reverse (20404210411522), we get a palindrome (42915611651924).

The spelling of 22511401240402 in words is "twenty-two trillion, five hundred eleven billion, four hundred one million, two hundred forty thousand, four hundred two".