101221213033 has 4 divisors (see below), whose sum is σ = 101276017920. Its totient is φ = 101166408148.

The previous prime is 101221213019. The next prime is 101221213097. The reversal of 101221213033 is 330312122101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101221213033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101221213033.

It is not an unprimeable number, because it can be changed into a prime (101221213003) 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, 27399673 + ... + 27403366.

It is an arithmetic number, because the mean of its divisors is an integer number (25319004480).

Almost surely, 2^101221213033 is an apocalyptic number.

It is an amenable number.

101221213033 is a deficient number, since it is larger than the sum of its proper divisors (54804887).

101221213033 is an equidigital number, since it uses as much as digits as its factorization.

101221213033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54804886.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 101221213033 its reverse (330312122101), we get a palindrome (431533335134).

The spelling of 101221213033 in words is "one hundred one billion, two hundred twenty-one million, two hundred thirteen thousand, thirty-three".