1220512253554 has 16 divisors (see below), whose sum is σ = 1998292706496. Its totient is φ = 554475286800.

The previous prime is 1220512253549. The next prime is 1220512253561. The reversal of 1220512253554 is 4553522150221.

It is a super-2 number, since 2×1220512253554² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15109317 + ... + 15189880.

It is an arithmetic number, because the mean of its divisors is an integer number (124893294156).

Almost surely, 2^{1220512253554} is an apocalyptic number.

1220512253554 is a deficient number, since it is larger than the sum of its proper divisors (777780452942).

1220512253554 is a wasteful number, since it uses less digits than its factorization.

1220512253554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30301041.

The product of its (nonzero) digits is 120000, while the sum is 37.

It can be divided in two parts, 12205122 and 53554, that added together give a triangular number (12258676 = T₄₉₅₁).

The spelling of 1220512253554 in words is "one trillion, two hundred twenty billion, five hundred twelve million, two hundred fifty-three thousand, five hundred fifty-four".