20150121034 has 16 divisors (see below), whose sum is σ = 31863016800. Its totient is φ = 9530683344.

The previous prime is 20150121023. The next prime is 20150121041. The reversal of 20150121034 is 43012105102.

It is a Harshad number since it is a multiple of its sum of digits (19).

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, 365904 + ... + 417355.

It is an arithmetic number, because the mean of its divisors is an integer number (1991438550).

Almost surely, 2^20150121034 is an apocalyptic number.

20150121034 is a deficient number, since it is larger than the sum of its proper divisors (11712895766).

20150121034 is a wasteful number, since it uses less digits than its factorization.

20150121034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783957.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 20150121034 its reverse (43012105102), we get a palindrome (63162226136).

The spelling of 20150121034 in words is "twenty billion, one hundred fifty million, one hundred twenty-one thousand, thirty-four".