101211212122111 has 32 divisors (see below), whose sum is σ = 125705303571456. Its totient is φ = 79350494400000.

The previous prime is 101211212122109. The next prime is 101211212122123. The reversal of 101211212122111 is 111221212112101.

It is a cyclic number.

It is not a de Polignac number, because 101211212122111 - 2¹ = 101211212122109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101211212122151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3673945 + ... + 14694226.

It is an arithmetic number, because the mean of its divisors is an integer number (3928290736608).

Almost surely, 2^{101211212122111} is an apocalyptic number.

101211212122111 is a deficient number, since it is larger than the sum of its proper divisors (24494091449345).

101211212122111 is a wasteful number, since it uses less digits than its factorization.

101211212122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18368743.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 101211212122111 its reverse (111221212112101), we get a palindrome (212432424234212).

The spelling of 101211212122111 in words is "one hundred one trillion, two hundred eleven billion, two hundred twelve million, one hundred twenty-two thousand, one hundred eleven".