20211122012 has 6 divisors (see below), whose sum is σ = 35369463528. Its totient is φ = 10105561004.

The previous prime is 20211122003. The next prime is 20211122021. The reversal of 20211122012 is 21022111202.

It is an interprime number because it is at equal distance from previous prime (20211122003) and next prime (20211122021).

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, 2526390248 + ... + 2526390255.

It is an arithmetic number, because the mean of its divisors is an integer number (5894910588).

Almost surely, 2^20211122012 is an apocalyptic number.

It is an amenable number.

20211122012 is a deficient number, since it is larger than the sum of its proper divisors (15158341516).

20211122012 is a wasteful number, since it uses less digits than its factorization.

20211122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5052780507 (or 5052780505 counting only the distinct ones).

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

Adding to 20211122012 its reverse (21022111202), we get a palindrome (41233233214).

The spelling of 20211122012 in words is "twenty billion, two hundred eleven million, one hundred twenty-two thousand, twelve".