1220550150554 has 24 divisors (see below), whose sum is σ = 2203174625940. Its totient is φ = 505055233536.

The previous prime is 1220550150487. The next prime is 1220550150557. The reversal of 1220550150554 is 4550510550221.

It can be written as a sum of positive squares in 2 ways, for example, as 1063326005329 + 157224145225 = 1031177^2 + 396515^2 .

It is not an unprimeable number, because it can be changed into a prime (1220550150557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 214731527 + ... + 214737210.

Almost surely, 2^{1220550150554} is an apocalyptic number.

1220550150554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1220550150554 is a deficient number, since it is larger than the sum of its proper divisors (982624475386).

1220550150554 is a wasteful number, since it uses less digits than its factorization.

1220550150554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429468782 (or 429468775 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 35.

The spelling of 1220550150554 in words is "one trillion, two hundred twenty billion, five hundred fifty million, one hundred fifty thousand, five hundred fifty-four".