210121151049 has 6 divisors (see below), whose sum is σ = 303508329306. Its totient is φ = 140080767360.

The previous prime is 210121151017. The next prime is 210121151059. The reversal of 210121151049 is 940151121012.

210121151049 is a `hidden beast` number, since 2 + 101 + 2 + 1 + 1 + 510 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 167798375424 + 42322775625 = 409632^2 + 205725^2 .

It is not a de Polignac number, because 210121151049 - 2⁵ = 210121151017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210121151059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11673397272 + ... + 11673397289.

It is an arithmetic number, because the mean of its divisors is an integer number (50584721551).

Almost surely, 2^210121151049 is an apocalyptic number.

It is an amenable number.

210121151049 is a deficient number, since it is larger than the sum of its proper divisors (93387178257).

210121151049 is a wasteful number, since it uses less digits than its factorization.

210121151049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23346794567 (or 23346794564 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The spelling of 210121151049 in words is "two hundred ten billion, one hundred twenty-one million, one hundred fifty-one thousand, forty-nine".