20111212092 has 24 divisors (see below), whose sum is σ = 49686524496. Its totient is φ = 6309399808.

The previous prime is 20111212073. The next prime is 20111212103. The reversal of 20111212092 is 29021211102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49291983 + ... + 49292390.

It is an arithmetic number, because the mean of its divisors is an integer number (2070271854).

Almost surely, 2^20111212092 is an apocalyptic number.

It is an amenable number.

20111212092 is an abundant number, since it is smaller than the sum of its proper divisors (29575312404).

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

20111212092 is a wasteful number, since it uses less digits than its factorization.

20111212092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98584397 (or 98584395 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 20111212092 its reverse (29021211102), we get a palindrome (49132423194).

The spelling of 20111212092 in words is "twenty billion, one hundred eleven million, two hundred twelve thousand, ninety-two".