21212002021199 has 16 divisors (see below), whose sum is σ = 23198490201600. Its totient is φ = 19235250766560.

The previous prime is 21212002021139. The next prime is 21212002021207. The reversal of 21212002021199 is 99112020021212.

It is a cyclic number.

It is not a de Polignac number, because 21212002021199 - 2³⁶ = 21143282544463 is a prime.

It is a super-2 number, since 2×21212002021199² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21212002021139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7334342 + ... + 9809004.

It is an arithmetic number, because the mean of its divisors is an integer number (1449905637600).

Almost surely, 2^{21212002021199} is an apocalyptic number.

21212002021199 is a deficient number, since it is larger than the sum of its proper divisors (1986488180401).

21212002021199 is a wasteful number, since it uses less digits than its factorization.

21212002021199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2476630.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 21212002021199 in words is "twenty-one trillion, two hundred twelve billion, two million, twenty-one thousand, one hundred ninety-nine".