20013120212 has 6 divisors (see below), whose sum is σ = 35022960378. Its totient is φ = 10006560104.

The previous prime is 20013120209. The next prime is 20013120233. The reversal of 20013120212 is 21202131002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18973960516 + 1039159696 = 137746^2 + 32236^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2501640023 + ... + 2501640030.

It is an arithmetic number, because the mean of its divisors is an integer number (5837160063).

Almost surely, 2^20013120212 is an apocalyptic number.

It is an amenable number.

20013120212 is a deficient number, since it is larger than the sum of its proper divisors (15009840166).

20013120212 is a wasteful number, since it uses less digits than its factorization.

20013120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5003280057 (or 5003280055 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20013120212 its reverse (21202131002), we get a palindrome (41215251214).

It can be divided in two parts, 2001 and 3120212, that added together give a palindrome (3122213).

The spelling of 20013120212 in words is "twenty billion, thirteen million, one hundred twenty thousand, two hundred twelve".