21122012100002 has 64 divisors (see below), whose sum is σ = 37277186494464. Its totient is φ = 8879799181440.

The previous prime is 21122012099963. The next prime is 21122012100053. The reversal of 21122012100002 is 20000121022112.

It is a super-2 number, since 2×21122012100002² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21122012100002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3376403 + ... + 7324214.

It is an arithmetic number, because the mean of its divisors is an integer number (582456038976).

Almost surely, 2^{21122012100002} is an apocalyptic number.

21122012100002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21122012100002 is a deficient number, since it is larger than the sum of its proper divisors (16155174394462).

21122012100002 is a wasteful number, since it uses less digits than its factorization.

21122012100002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10700783.

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

Adding to 21122012100002 its reverse (20000121022112), we get a palindrome (41122133122114).

The spelling of 21122012100002 in words is "twenty-one trillion, one hundred twenty-two billion, twelve million, one hundred thousand, two".