20102606120 has 64 divisors (see below), whose sum is σ = 46047655440. Its totient is φ = 7896268800.

The previous prime is 20102606113. The next prime is 20102606137. The reversal of 20102606120 is 2160620102.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4831084036 + 15271522084 = 69506^2 + 123578^2 .

It is a super-2 number, since 2×20102606120² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20102606092 and 20102606101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1557614 + ... + 1570466.

Almost surely, 2^20102606120 is an apocalyptic number.

20102606120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20102606120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23023827720).

20102606120 is an abundant number, since it is smaller than the sum of its proper divisors (25945049320).

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

20102606120 is a wasteful number, since it uses less digits than its factorization.

20102606120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13566 (or 13562 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The spelling of 20102606120 in words is "twenty billion, one hundred two million, six hundred six thousand, one hundred twenty".