20211101212211 has 16 divisors (see below), whose sum is σ = 25732967064000. Its totient is φ = 15439780234368.

The previous prime is 20211101212147. The next prime is 20211101212231. The reversal of 20211101212211 is 11221210111202.

It is not a de Polignac number, because 20211101212211 - 2⁶ = 20211101212147 is a prime.

It is a super-2 number, since 2×20211101212211² (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 20211101212211.

It is not an unprimeable number, because it can be changed into a prime (20211101212231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3829307936 + ... + 3829313213.

It is an arithmetic number, because the mean of its divisors is an integer number (1608310441500).

Almost surely, 2^{20211101212211} is an apocalyptic number.

20211101212211 is a deficient number, since it is larger than the sum of its proper divisors (5521865851789).

20211101212211 is a wasteful number, since it uses less digits than its factorization.

20211101212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7658621198.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 20211101212211 its reverse (11221210111202), we get a palindrome (31432311323413).

The spelling of 20211101212211 in words is "twenty trillion, two hundred eleven billion, one hundred one million, two hundred twelve thousand, two hundred eleven".