2154545221210 has 16 divisors (see below), whose sum is σ = 3881716679016. Its totient is φ = 861032470528.

The previous prime is 2154545221183. The next prime is 2154545221259. The reversal of 2154545221210 is 121225454512.

It can be written as a sum of positive squares in 4 ways, for example, as 1829881158361 + 324664062849 = 1352731^2 + 569793^2 .

It is a super-2 number, since 2×2154545221210² (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 (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98190727 + ... + 98212666.

Almost surely, 2^{2154545221210} is an apocalyptic number.

2154545221210 is a deficient number, since it is larger than the sum of its proper divisors (1727171457806).

2154545221210 is a wasteful number, since it uses less digits than its factorization.

2154545221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196404497.

The product of its (nonzero) digits is 32000, while the sum is 34.

The spelling of 2154545221210 in words is "two trillion, one hundred fifty-four billion, five hundred forty-five million, two hundred twenty-one thousand, two hundred ten".