20121122212019 has 4 divisors (see below), whose sum is σ = 20152512418920. Its totient is φ = 20089732005120.

The previous prime is 20121122211877. The next prime is 20121122212021. The reversal of 20121122212019 is 91021222112102.

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 20121122212019 - 2²⁸ = 20120853776563 is a prime.

It is a super-2 number, since 2×20121122212019² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121122212069) 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, 15695102489 + ... + 15695103770.

It is an arithmetic number, because the mean of its divisors is an integer number (5038128104730).

Almost surely, 2^{20121122212019} is an apocalyptic number.

20121122212019 is a deficient number, since it is larger than the sum of its proper divisors (31390206901).

20121122212019 is an equidigital number, since it uses as much as digits as its factorization.

20121122212019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31390206900.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 20121122212019 in words is "twenty trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred twelve thousand, nineteen".