920212122211 has 4 divisors (see below), whose sum is σ = 929323133424. Its totient is φ = 911101111000.

The previous prime is 920212122191. The next prime is 920212122233. The reversal of 920212122211 is 112221212029.

It is a happy number.

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 920212122211 - 2⁷ = 920212122083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (920212122241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4555505455 + ... + 4555505656.

It is an arithmetic number, because the mean of its divisors is an integer number (232330783356).

Almost surely, 2^920212122211 is an apocalyptic number.

920212122211 is a deficient number, since it is larger than the sum of its proper divisors (9111011213).

920212122211 is a wasteful number, since it uses less digits than its factorization.

920212122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9111011212.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 920212122211 in words is "nine hundred twenty billion, two hundred twelve million, one hundred twenty-two thousand, two hundred eleven".