121102021221101 has 4 divisors (see below), whose sum is σ = 124055729055804. Its totient is φ = 118148313386400.

The previous prime is 121102021221079. The next prime is 121102021221113. The reversal of 121102021221101 is 101122120201121.

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 6685839318601 + 114416181902500 = 2585699^2 + 10696550^2 .

It is a cyclic number.

It is not a de Polignac number, because 121102021221101 - 2⁴² = 116703974709997 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 121102021221101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102021227101) 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, 1476853917290 + ... + 1476853917371.

It is an arithmetic number, because the mean of its divisors is an integer number (31013932263951).

Almost surely, 2^{121102021221101} is an apocalyptic number.

It is an amenable number.

121102021221101 is a deficient number, since it is larger than the sum of its proper divisors (2953707834703).

121102021221101 is an equidigital number, since it uses as much as digits as its factorization.

121102021221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2953707834702.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121102021221101 its reverse (101122120201121), we get a palindrome (222224141422222).

The spelling of 121102021221101 in words is "one hundred twenty-one trillion, one hundred two billion, twenty-one million, two hundred twenty-one thousand, one hundred one".