101221121033 has 2 divisors, whose sum is σ = 101221121034. Its totient is φ = 101221121032.

The previous prime is 101221121011. The next prime is 101221121087. The reversal of 101221121033 is 330121122101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74243715529 + 26977405504 = 272477^2 + 164248^2 .

It is a cyclic number.

It is not a de Polignac number, because 101221121033 - 2¹² = 101221116937 is a prime.

It is not a weakly prime, because it can be changed into another prime (101221123033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610560516 + 50610560517.

It is an arithmetic number, because the mean of its divisors is an integer number (50610560517).

Almost surely, 2^101221121033 is an apocalyptic number.

It is an amenable number.

101221121033 is a deficient number, since it is larger than the sum of its proper divisors (1).

101221121033 is an equidigital number, since it uses as much as digits as its factorization.

101221121033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 101221121033 its reverse (330121122101), we get a palindrome (431342243134).

The spelling of 101221121033 in words is "one hundred one billion, two hundred twenty-one million, one hundred twenty-one thousand, thirty-three".