101220212220011 has 4 divisors (see below), whose sum is σ = 101577880814712. Its totient is φ = 100862543625312.

The previous prime is 101220212219989. The next prime is 101220212220077. The reversal of 101220212220011 is 110022212022101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101220212220011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101220212220091) 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, 178834296926 + ... + 178834297491.

It is an arithmetic number, because the mean of its divisors is an integer number (25394470203678).

Almost surely, 2^{101220212220011} is an apocalyptic number.

101220212220011 is a deficient number, since it is larger than the sum of its proper divisors (357668594701).

101220212220011 is an equidigital number, since it uses as much as digits as its factorization.

101220212220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357668594700.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 101220212220011 its reverse (110022212022101), we get a palindrome (211242424242112).

The spelling of 101220212220011 in words is "one hundred one trillion, two hundred twenty billion, two hundred twelve million, two hundred twenty thousand, eleven".