21012222000101 has 4 divisors (see below), whose sum is σ = 21208597906752. Its totient is φ = 20815846093452.

The previous prime is 21012222000089. The next prime is 21012222000137. The reversal of 21012222000101 is 10100022221012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21012222000101 - 2³⁴ = 20995042130917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21012222000901) 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, 98187953165 + ... + 98187953378.

It is an arithmetic number, because the mean of its divisors is an integer number (5302149476688).

Almost surely, 2^{21012222000101} is an apocalyptic number.

It is an amenable number.

21012222000101 is a deficient number, since it is larger than the sum of its proper divisors (196375906651).

21012222000101 is a wasteful number, since it uses less digits than its factorization.

21012222000101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196375906650.

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

Adding to 21012222000101 its reverse (10100022221012), we get a palindrome (31112244221113).

The spelling of 21012222000101 in words is "twenty-one trillion, twelve billion, two hundred twenty-two million, one hundred one", and thus it is an aban number.