20351520122 has 48 divisors (see below), whose sum is σ = 32710721472. Its totient is φ = 9494029440.

The previous prime is 20351520113. The next prime is 20351520151. The reversal of 20351520122 is 22102515302.

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 23 ways as a sum of consecutive naturals, for example, 15690578 + ... + 15691874.

It is an arithmetic number, because the mean of its divisors is an integer number (681473364).

Almost surely, 2^20351520122 is an apocalyptic number.

20351520122 is a deficient number, since it is larger than the sum of its proper divisors (12359201350).

20351520122 is a wasteful number, since it uses less digits than its factorization.

20351520122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651 (or 1632 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 20351520122 in words is "twenty billion, three hundred fifty-one million, five hundred twenty thousand, one hundred twenty-two".