20121103231002 has 48 divisors (see below), whose sum is σ = 46716324782400. Its totient is φ = 6236448713856.

The previous prime is 20121103230979. The next prime is 20121103231079. The reversal of 20121103231002 is 20013230112102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 396090502 + ... + 396141297.

It is an arithmetic number, because the mean of its divisors is an integer number (973256766300).

Almost surely, 2^{20121103231002} is an apocalyptic number.

20121103231002 is an abundant number, since it is smaller than the sum of its proper divisors (26595221551398).

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

20121103231002 is a wasteful number, since it uses less digits than its factorization.

20121103231002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792231907 (or 792231904 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20121103231002 its reverse (20013230112102), we get a palindrome (40134333343104).

The spelling of 20121103231002 in words is "twenty trillion, one hundred twenty-one billion, one hundred three million, two hundred thirty-one thousand, two".