20121121302 has 48 divisors (see below), whose sum is σ = 41088724992. Its totient is φ = 6568445520.

The previous prime is 20121121291. The next prime is 20121121333. The reversal of 20121121302 is 20312112102.

It is a congruent number.

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, 4753527 + ... + 4757757.

It is an arithmetic number, because the mean of its divisors is an integer number (856015104).

Almost surely, 2^20121121302 is an apocalyptic number.

20121121302 is an abundant number, since it is smaller than the sum of its proper divisors (20967603690).

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

20121121302 is a wasteful number, since it uses less digits than its factorization.

20121121302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4521 (or 4442 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20121121302 its reverse (20312112102), we get a palindrome (40433233404).

The spelling of 20121121302 in words is "twenty billion, one hundred twenty-one million, one hundred twenty-one thousand, three hundred two".