121253869 has 4 divisors (see below), whose sum is σ = 132276960. Its totient is φ = 110230780.

The previous prime is 121253831. The next prime is 121253879. The reversal of 121253869 is 968352121.

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 121253869 - 2²¹ = 119156717 is a prime.

It is a super-2 number, since 2×121253869² = 29405001494938322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121253819) 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, 5511529 + ... + 5511550.

It is an arithmetic number, because the mean of its divisors is an integer number (33069240).

Almost surely, 2^121253869 is an apocalyptic number.

It is an amenable number.

121253869 is a deficient number, since it is larger than the sum of its proper divisors (11023091).

121253869 is a wasteful number, since it uses less digits than its factorization.

121253869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11023090.

The product of its digits is 25920, while the sum is 37.

The square root of 121253869 is about 11011.5334536113. The cubic root of 121253869 is about 494.9544140586.

The spelling of 121253869 in words is "one hundred twenty-one million, two hundred fifty-three thousand, eight hundred sixty-nine".