121001022101 has 4 divisors (see below), whose sum is σ = 121008211104. Its totient is φ = 120993833100.

The previous prime is 121001022097. The next prime is 121001022113. The reversal of 121001022101 is 101220100121.

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 not a de Polignac number, because 121001022101 - 2² = 121001022097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001022601) 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, 3569195 + ... + 3602936.

It is an arithmetic number, because the mean of its divisors is an integer number (30252052776).

Almost surely, 2^121001022101 is an apocalyptic number.

It is an amenable number.

121001022101 is a deficient number, since it is larger than the sum of its proper divisors (7189003).

121001022101 is an equidigital number, since it uses as much as digits as its factorization.

121001022101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7189002.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121001022101 its reverse (101220100121), we get a palindrome (222221122222).

The spelling of 121001022101 in words is "one hundred twenty-one billion, one million, twenty-two thousand, one hundred one".