20120202020111 has 4 divisors (see below), whose sum is σ = 20814002089800. Its totient is φ = 19426401950424.

The previous prime is 20120202020099. The next prime is 20120202020147. The reversal of 20120202020111 is 11102020202102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20120202020111 - 2²² = 20120197825807 is a prime.

It is a super-3 number, since 3×20120202020111³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120202020911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346900034801 + ... + 346900034858.

It is an arithmetic number, because the mean of its divisors is an integer number (5203500522450).

Almost surely, 2^{20120202020111} is an apocalyptic number.

20120202020111 is a deficient number, since it is larger than the sum of its proper divisors (693800069689).

20120202020111 is an equidigital number, since it uses as much as digits as its factorization.

20120202020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693800069688.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20120202020111 its reverse (11102020202102), we get a palindrome (31222222222213).

The spelling of 20120202020111 in words is "twenty trillion, one hundred twenty billion, two hundred two million, twenty thousand, one hundred eleven".