20001211012022 has 4 divisors (see below), whose sum is σ = 30001816518036. Its totient is φ = 10000605506010.

The previous prime is 20001211011979. The next prime is 20001211012043. The reversal of 20001211012022 is 22021011210002.

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

It is a junction number, because it is equal to n+sod(n) for n = 20001211011988 and 20001211012006.

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, 5000302753004 + ... + 5000302753007.

It is an arithmetic number, because the mean of its divisors is an integer number (7500454129509).

Almost surely, 2^{20001211012022} is an apocalyptic number.

20001211012022 is a deficient number, since it is larger than the sum of its proper divisors (10000605506014).

20001211012022 is a wasteful number, since it uses less digits than its factorization.

20001211012022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10000605506013.

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

Adding to 20001211012022 its reverse (22021011210002), we get a palindrome (42022222222024).

The spelling of 20001211012022 in words is "twenty trillion, one billion, two hundred eleven million, twelve thousand, twenty-two".