21150660122 has 16 divisors (see below), whose sum is σ = 33502493760. Its totient is φ = 9986719392.

The previous prime is 21150660107. The next prime is 21150660149. The reversal of 21150660122 is 22106605112.

21150660122 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×21150660122² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21150660091 and 21150660100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 877238 + ... + 901025.

It is an arithmetic number, because the mean of its divisors is an integer number (2093905860).

Almost surely, 2^21150660122 is an apocalyptic number.

21150660122 is a deficient number, since it is larger than the sum of its proper divisors (12351833638).

21150660122 is a wasteful number, since it uses less digits than its factorization.

21150660122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778597.

The product of its (nonzero) digits is 1440, while the sum is 26.

The spelling of 21150660122 in words is "twenty-one billion, one hundred fifty million, six hundred sixty thousand, one hundred twenty-two".