121211212095 has 12 divisors (see below), whose sum is σ = 210099434376. Its totient is φ = 64645979760.

The previous prime is 121211212093. The next prime is 121211212103. The reversal of 121211212095 is 590212112121.

It is not a de Polignac number, because 121211212095 - 2¹ = 121211212093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121211212091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1346791201 + ... + 1346791290.

It is an arithmetic number, because the mean of its divisors is an integer number (17508286198).

Almost surely, 2^121211212095 is an apocalyptic number.

121211212095 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121211212095 is a deficient number, since it is larger than the sum of its proper divisors (88888222281).

121211212095 is a wasteful number, since it uses less digits than its factorization.

121211212095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2693582502 (or 2693582499 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The spelling of 121211212095 in words is "one hundred twenty-one billion, two hundred eleven million, two hundred twelve thousand, ninety-five".