121954282269 has 16 divisors (see below), whose sum is σ = 165472397184. Its totient is φ = 79872753600.

The previous prime is 121954282213. The next prime is 121954282273. The reversal of 121954282269 is 962282459121.

It is not a de Polignac number, because 121954282269 - 2¹³ = 121954274077 is a prime.

It is a super-2 number, since 2×121954282269² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121954282169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254262 + ... + 555479.

It is an arithmetic number, because the mean of its divisors is an integer number (10342024824).

Almost surely, 2^121954282269 is an apocalyptic number.

It is an amenable number.

121954282269 is a deficient number, since it is larger than the sum of its proper divisors (43518114915).

121954282269 is an equidigital number, since it uses as much as digits as its factorization.

121954282269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810628.

The product of its digits is 1244160, while the sum is 51.

The spelling of 121954282269 in words is "one hundred twenty-one billion, nine hundred fifty-four million, two hundred eighty-two thousand, two hundred sixty-nine".