121022210101 has 4 divisors (see below), whose sum is σ = 130331610892. Its totient is φ = 111712809312.

The previous prime is 121022210087. The next prime is 121022210107. The reversal of 121022210101 is 101012220121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46225430001 + 74796780100 = 215001^2 + 273490^2 .

It is not a de Polignac number, because 121022210101 - 2⁵ = 121022210069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 9309400777 = 121022210101 / (1 + 2 + 1 + 0 + 2 + 2 + 2 + 1 + 0 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121022210107) 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, 4654700376 + ... + 4654700401.

It is an arithmetic number, because the mean of its divisors is an integer number (32582902723).

Almost surely, 2^121022210101 is an apocalyptic number.

It is an amenable number.

121022210101 is a deficient number, since it is larger than the sum of its proper divisors (9309400791).

121022210101 is an equidigital number, since it uses as much as digits as its factorization.

121022210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9309400790.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121022210101 its reverse (101012220121), we get a palindrome (222034430222).

The spelling of 121022210101 in words is "one hundred twenty-one billion, twenty-two million, two hundred ten thousand, one hundred one".