12221493954 has 16 divisors (see below), whose sum is σ = 25285849920. Its totient is φ = 3933354320.

The previous prime is 12221493931. The next prime is 12221493997. The reversal of 12221493954 is 45939412221.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35119062 + ... + 35119409.

It is an arithmetic number, because the mean of its divisors is an integer number (1580365620).

Almost surely, 2^12221493954 is an apocalyptic number.

12221493954 is an abundant number, since it is smaller than the sum of its proper divisors (13064355966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12221493954 is a wasteful number, since it uses less digits than its factorization.

12221493954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70238505.

The product of its digits is 155520, while the sum is 42.

The spelling of 12221493954 in words is "twelve billion, two hundred twenty-one million, four hundred ninety-three thousand, nine hundred fifty-four".