101220012021011 has 4 divisors (see below), whose sum is σ = 109006166791872. Its totient is φ = 93433857250152.

The previous prime is 101220012020983. The next prime is 101220012021091. The reversal of 101220012021011 is 110120210022101.

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 101220012021011 - 2³⁰ = 101218938279187 is a prime.

It is a super-2 number, since 2×101220012021011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101220012021091) 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, 3893077385411 + ... + 3893077385436.

It is an arithmetic number, because the mean of its divisors is an integer number (27251541697968).

Almost surely, 2^{101220012021011} is an apocalyptic number.

101220012021011 is a deficient number, since it is larger than the sum of its proper divisors (7786154770861).

101220012021011 is an equidigital number, since it uses as much as digits as its factorization.

101220012021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7786154770860.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 101220012021011 its reverse (110120210022101), we get a palindrome (211340222043112).

The spelling of 101220012021011 in words is "one hundred one trillion, two hundred twenty billion, twelve million, twenty-one thousand, eleven".