21122103034 has 4 divisors (see below), whose sum is σ = 31683154554. Its totient is φ = 10561051516.

The previous prime is 21122103029. The next prime is 21122103109. The reversal of 21122103034 is 43030122112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17903242809 + 3218860225 = 133803^2 + 56735^2 .

It is a super-2 number, since 2×21122103034² (a number of 21 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 as a sum of consecutive naturals, namely, 5280525757 + ... + 5280525760.

Almost surely, 2^21122103034 is an apocalyptic number.

21122103034 is a deficient number, since it is larger than the sum of its proper divisors (10561051520).

21122103034 is a wasteful number, since it uses less digits than its factorization.

21122103034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10561051519.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21122103034 its reverse (43030122112), we get a palindrome (64152225146).

The spelling of 21122103034 in words is "twenty-one billion, one hundred twenty-two million, one hundred three thousand, thirty-four".