20151055122 has 16 divisors (see below), whose sum is σ = 43965938592. Its totient is φ = 6106380320.

The previous prime is 20151055121. The next prime is 20151055163. The reversal of 20151055122 is 22155015102.

It is a junction number, because it is equal to n+sod(n) for n = 20151055092 and 20151055101.

It is not an unprimeable number, because it can be changed into a prime (20151055121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152659443 + ... + 152659574.

It is an arithmetic number, because the mean of its divisors is an integer number (2747871162).

Almost surely, 2^20151055122 is an apocalyptic number.

20151055122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20151055122 is an abundant number, since it is smaller than the sum of its proper divisors (23814883470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20151055122 is a wasteful number, since it uses less digits than its factorization.

20151055122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305319033.

The product of its (nonzero) digits is 1000, while the sum is 24.

The spelling of 20151055122 in words is "twenty billion, one hundred fifty-one million, fifty-five thousand, one hundred twenty-two".