121711657011 has 16 divisors (see below), whose sum is σ = 187301676288. Its totient is φ = 68860908000.

The previous prime is 121711657009. The next prime is 121711657013. The reversal of 121711657011 is 110756117121.

It is an interprime number because it is at equal distance from previous prime (121711657009) and next prime (121711657013).

It is not a de Polignac number, because 121711657011 - 2¹ = 121711657009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121711657013) 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, 28689925 + ... + 28694166.

It is an arithmetic number, because the mean of its divisors is an integer number (11706354768).

Almost surely, 2^121711657011 is an apocalyptic number.

121711657011 is a deficient number, since it is larger than the sum of its proper divisors (65590019277).

121711657011 is a wasteful number, since it uses less digits than its factorization.

121711657011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57384202.

The product of its (nonzero) digits is 2940, while the sum is 33.

The spelling of 121711657011 in words is "one hundred twenty-one billion, seven hundred eleven million, six hundred fifty-seven thousand, eleven".