121097541 has 4 divisors (see below), whose sum is σ = 161463392. Its totient is φ = 80731692.

The previous prime is 121097539. The next prime is 121097551. The reversal of 121097541 is 145790121.

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 not a de Polignac number, because 121097541 - 2¹ = 121097539 is a prime.

It is a super-2 number, since 2×121097541² = 29329228872493362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121097499 and 121097508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121097551) 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, 20182921 + ... + 20182926.

It is an arithmetic number, because the mean of its divisors is an integer number (40365848).

Almost surely, 2^121097541 is an apocalyptic number.

It is an amenable number.

121097541 is a deficient number, since it is larger than the sum of its proper divisors (40365851).

121097541 is an equidigital number, since it uses as much as digits as its factorization.

121097541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40365850.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 121097541 is about 11004.4327886539. The cubic root of 121097541 is about 494.7416139492.

The spelling of 121097541 in words is "one hundred twenty-one million, ninety-seven thousand, five hundred forty-one".