20001540122 has 32 divisors (see below), whose sum is σ = 32445766080. Its totient is φ = 9216443520.

The previous prime is 20001540121. The next prime is 20001540127. The reversal of 20001540122 is 22104510002.

It is a self number, because there is not a number n which added to its sum of digits gives 20001540122.

It is not an unprimeable number, because it can be changed into a prime (20001540121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 522128 + ... + 559124.

It is an arithmetic number, because the mean of its divisors is an integer number (1013930190).

Almost surely, 2^20001540122 is an apocalyptic number.

20001540122 is a deficient number, since it is larger than the sum of its proper divisors (12444225958).

20001540122 is a wasteful number, since it uses less digits than its factorization.

20001540122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37406.

The product of its (nonzero) digits is 160, while the sum is 17.

The spelling of 20001540122 in words is "twenty billion, one million, five hundred forty thousand, one hundred twenty-two".