21122022212002 has 4 divisors (see below), whose sum is σ = 31683033318006. Its totient is φ = 10561011106000.

The previous prime is 21122022211987. The next prime is 21122022212017. The reversal of 21122022212002 is 20021222022112.

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

It is an interprime number because it is at equal distance from previous prime (21122022211987) and next prime (21122022212017).

It can be written as a sum of positive squares in only one way, i.e., 17080953333921 + 4041068878081 = 4132911^2 + 2010241^2 .

It is a super-2 number, since 2×21122022212002² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5280505552999 + ... + 5280505553002.

Almost surely, 2^{21122022212002} is an apocalyptic number.

21122022212002 is a deficient number, since it is larger than the sum of its proper divisors (10561011106004).

21122022212002 is a wasteful number, since it uses less digits than its factorization.

21122022212002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10561011106003.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21122022212002 its reverse (20021222022112), we get a palindrome (41143244234114).

The spelling of 21122022212002 in words is "twenty-one trillion, one hundred twenty-two billion, twenty-two million, two hundred twelve thousand, two".