1220544250121 has 16 divisors (see below), whose sum is σ = 1498289712000. Its totient is φ = 991118633904.

The previous prime is 1220544250117. The next prime is 1220544250141. The reversal of 1220544250121 is 1210524450221.

It is not a de Polignac number, because 1220544250121 - 2² = 1220544250117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220544250111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93636590 + ... + 93649623.

It is an arithmetic number, because the mean of its divisors is an integer number (93643107000).

Almost surely, 2^{1220544250121} is an apocalyptic number.

It is an amenable number.

1220544250121 is a deficient number, since it is larger than the sum of its proper divisors (277745461879).

1220544250121 is an equidigital number, since it uses as much as digits as its factorization.

1220544250121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187286253 (or 187286239 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The spelling of 1220544250121 in words is "one trillion, two hundred twenty billion, five hundred forty-four million, two hundred fifty thousand, one hundred twenty-one".