101011001221211 has 4 divisors (see below), whose sum is σ = 101011021519152. Its totient is φ = 101010980923272.

The previous prime is 101011001221183. The next prime is 101011001221243. The reversal of 101011001221211 is 112122100110101.

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-101011001221211 is a prime.

It is a super-2 number, since 2×101011001221211² (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 (101011001221271) 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, 2958161 + ... + 14518013.

It is an arithmetic number, because the mean of its divisors is an integer number (25252755379788).

Almost surely, 2^{101011001221211} is an apocalyptic number.

101011001221211 is a deficient number, since it is larger than the sum of its proper divisors (20297941).

101011001221211 is an equidigital number, since it uses as much as digits as its factorization.

101011001221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20297940.

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

Adding to 101011001221211 its reverse (112122100110101), we get a palindrome (213133101331312).

It can be divided in two parts, 10101100 and 1221211, that added together give a palindrome (11322311).

The spelling of 101011001221211 in words is "one hundred one trillion, eleven billion, one million, two hundred twenty-one thousand, two hundred eleven".