20012121130 has 32 divisors (see below), whose sum is σ = 36177062400. Its totient is φ = 7970420352.

The previous prime is 20012121109. The next prime is 20012121137. The reversal of 20012121130 is 3112121002.

It is a self number, because there is not a number n which added to its sum of digits gives 20012121130.

It is not an unprimeable number, because it can be changed into a prime (20012121137) 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, 2577334 + ... + 2585086.

It is an arithmetic number, because the mean of its divisors is an integer number (1130533200).

Almost surely, 2^20012121130 is an apocalyptic number.

20012121130 is a deficient number, since it is larger than the sum of its proper divisors (16164941270).

20012121130 is a wasteful number, since it uses less digits than its factorization.

20012121130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8838.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20012121130 its reverse (3112121002), we get a palindrome (23124242132).

The spelling of 20012121130 in words is "twenty billion, twelve million, one hundred twenty-one thousand, one hundred thirty".