121022101313 has 4 divisors (see below), whose sum is σ = 122269751940. Its totient is φ = 119774450688.

The previous prime is 121022101309. The next prime is 121022101331. The reversal of 121022101313 is 313101220121.

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 17960556289 + 103061545024 = 134017^2 + 321032^2 .

It is a cyclic number.

It is not a de Polignac number, because 121022101313 - 2² = 121022101309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121022101291 and 121022101300.

It is not an unprimeable number, because it can be changed into a prime (121022101373) 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, 623825168 + ... + 623825361.

It is an arithmetic number, because the mean of its divisors is an integer number (30567437985).

Almost surely, 2^121022101313 is an apocalyptic number.

It is an amenable number.

121022101313 is a deficient number, since it is larger than the sum of its proper divisors (1247650627).

121022101313 is an equidigital number, since it uses as much as digits as its factorization.

121022101313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247650626.

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

Adding to 121022101313 its reverse (313101220121), we get a palindrome (434123321434).

The spelling of 121022101313 in words is "one hundred twenty-one billion, twenty-two million, one hundred one thousand, three hundred thirteen".