20211200199969 has 16 divisors (see below), whose sum is σ = 28092987323904. Its totient is φ = 12910380192000.

The previous prime is 20211200199929. The next prime is 20211200199991. The reversal of 20211200199969 is 96999100211202.

It is not a de Polignac number, because 20211200199969 - 2²⁹ = 20210663329057 is a prime.

It is a super-2 number, since 2×20211200199969² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20211200199929) 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, 1075855624 + ... + 1075874409.

It is an arithmetic number, because the mean of its divisors is an integer number (1755811707744).

Almost surely, 2^{20211200199969} is an apocalyptic number.

It is an amenable number.

20211200199969 is a deficient number, since it is larger than the sum of its proper divisors (7881787123935).

20211200199969 is a wasteful number, since it uses less digits than its factorization.

20211200199969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2151730168.

The product of its (nonzero) digits is 314928, while the sum is 51.

The spelling of 20211200199969 in words is "twenty trillion, two hundred eleven billion, two hundred million, one hundred ninety-nine thousand, nine hundred sixty-nine".