21012101122022 has 8 divisors (see below), whose sum is σ = 31518185943672. Its totient is φ = 10506039140800.

The previous prime is 21012101122021. The next prime is 21012101122139. The reversal of 21012101122022 is 22022110121012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21012101122021) 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, 3187304 + ... + 7223787.

It is an arithmetic number, because the mean of its divisors is an integer number (3939773242959).

Almost surely, 2^{21012101122022} is an apocalyptic number.

21012101122022 is a deficient number, since it is larger than the sum of its proper divisors (10506084821650).

21012101122022 is a wasteful number, since it uses less digits than its factorization.

21012101122022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11420214.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21012101122022 its reverse (22022110121012), we get a palindrome (43034211243034).

The spelling of 21012101122022 in words is "twenty-one trillion, twelve billion, one hundred one million, one hundred twenty-two thousand, twenty-two".