20111212021202 has 16 divisors (see below), whose sum is σ = 30330585628992. Its totient is φ = 10001052625200.

The previous prime is 20111212021177. The next prime is 20111212021253. The reversal of 20111212021202 is 20212021211102.

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 7 ways as a sum of consecutive naturals, for example, 7828598 + ... + 10075185.

It is an arithmetic number, because the mean of its divisors is an integer number (1895661601812).

Almost surely, 2^{20111212021202} is an apocalyptic number.

20111212021202 is a deficient number, since it is larger than the sum of its proper divisors (10219373607790).

20111212021202 is a wasteful number, since it uses less digits than its factorization.

20111212021202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17906833.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20111212021202 its reverse (20212021211102), we get a palindrome (40323233232304).

The spelling of 20111212021202 in words is "twenty trillion, one hundred eleven billion, two hundred twelve million, twenty-one thousand, two hundred two".