2221880154 has 32 divisors (see below), whose sum is σ = 4790244480. Its totient is φ = 682990272.

The previous prime is 2221880123. The next prime is 2221880189. The reversal of 2221880154 is 4510881222.

2221880154 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70059 + ... + 96705.

It is an arithmetic number, because the mean of its divisors is an integer number (149695140).

Almost surely, 2^2221880154 is an apocalyptic number.

2221880154 is an abundant number, since it is smaller than the sum of its proper divisors (2568364326).

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

2221880154 is a wasteful number, since it uses less digits than its factorization.

2221880154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27734.

The product of its (nonzero) digits is 10240, while the sum is 33.

The square root of 2221880154 is about 47136.8237580769. The cubic root of 2221880154 is about 1304.8889193630. Note that the first 3 decimals are identical.

The spelling of 2221880154 in words is "two billion, two hundred twenty-one million, eight hundred eighty thousand, one hundred fifty-four".