21122020112002 has 8 divisors (see below), whose sum is σ = 31695821063676. Its totient is φ = 10556746424112.

The previous prime is 21122020111961. The next prime is 21122020112009. The reversal of 21122020112002 is 20021102022112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19873059642241 + 1248960469761 = 4457921^2 + 1117569^2 .

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

It is a super-2 number, since 2×21122020112002² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21122020112009) 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, 2131809753 + ... + 2131819660.

Almost surely, 2^{21122020112002} is an apocalyptic number.

21122020112002 is a deficient number, since it is larger than the sum of its proper divisors (10573800951674).

21122020112002 is a wasteful number, since it uses less digits than its factorization.

21122020112002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4263631892.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21122020112002 its reverse (20021102022112), we get a palindrome (41143122134114).

The spelling of 21122020112002 in words is "twenty-one trillion, one hundred twenty-two billion, twenty million, one hundred twelve thousand, two".