101220011021111 has 4 divisors (see below), whose sum is σ = 103573964765832. Its totient is φ = 98866057276392.

The previous prime is 101220011021081. The next prime is 101220011021113. The reversal of 101220011021111 is 111120110022101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101220011021111 - 2¹⁴ = 101220011004727 is a prime.

It is a super-2 number, since 2×101220011021111² (a number of 29 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 (101220011021113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1176976872296 + ... + 1176976872381.

It is an arithmetic number, because the mean of its divisors is an integer number (25893491191458).

Almost surely, 2^{101220011021111} is an apocalyptic number.

101220011021111 is a deficient number, since it is larger than the sum of its proper divisors (2353953744721).

101220011021111 is an equidigital number, since it uses as much as digits as its factorization.

101220011021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2353953744720.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 101220011021111 its reverse (111120110022101), we get a palindrome (212340121043212).

The spelling of 101220011021111 in words is "one hundred one trillion, two hundred twenty billion, eleven million, twenty-one thousand, one hundred eleven".