221412500213555 has 32 divisors (see below), whose sum is σ = 308631533400960. Its totient is φ = 149335697848320.

The previous prime is 221412500213539. The next prime is 221412500213579. The reversal of 221412500213555 is 555312005214122.

It is not a de Polignac number, because 221412500213555 - 2⁴ = 221412500213539 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 397038461 + ... + 397595729.

It is an arithmetic number, because the mean of its divisors is an integer number (9644735418780).

Almost surely, 2^{221412500213555} is an apocalyptic number.

221412500213555 is a deficient number, since it is larger than the sum of its proper divisors (87219033187405).

221412500213555 is a wasteful number, since it uses less digits than its factorization.

221412500213555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743439.

The product of its (nonzero) digits is 120000, while the sum is 38.

Adding to 221412500213555 its reverse (555312005214122), we get a palindrome (776724505427677).

The spelling of 221412500213555 in words is "two hundred twenty-one trillion, four hundred twelve billion, five hundred million, two hundred thirteen thousand, five hundred fifty-five".