21022111010002 has 8 divisors (see below), whose sum is σ = 31546410187212. Its totient is φ = 10506640947600.

The previous prime is 21022111009987. The next prime is 21022111010009. The reversal of 21022111010002 is 20001011122012.

It can be written as a sum of positive squares in 2 ways, for example, as 20870835908521 + 151275101481 = 4568461^2 + 388941^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21022111010009) 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, 2207272749 + ... + 2207282272.

Almost surely, 2^{21022111010002} is an apocalyptic number.

21022111010002 is a deficient number, since it is larger than the sum of its proper divisors (10524299177210).

21022111010002 is a wasteful number, since it uses less digits than its factorization.

21022111010002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4414557404.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21022111010002 its reverse (20001011122012), we get a palindrome (41023122132014).

The spelling of 21022111010002 in words is "twenty-one trillion, twenty-two billion, one hundred eleven million, ten thousand, two".