121161711670 has 32 divisors (see below), whose sum is σ = 230959058400. Its totient is φ = 45606099456.

The previous prime is 121161711637. The next prime is 121161711679. The reversal of 121161711670 is 76117161121.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121161711679) 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, 1001721 + ... + 1116139.

It is an arithmetic number, because the mean of its divisors is an integer number (7217470575).

Almost surely, 2^121161711670 is an apocalyptic number.

121161711670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121161711670 is a deficient number, since it is larger than the sum of its proper divisors (109797346730).

121161711670 is a wasteful number, since it uses less digits than its factorization.

121161711670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120672.

The product of its (nonzero) digits is 3528, while the sum is 34.

Adding to 121161711670 its reverse (76117161121), we get a palindrome (197278872791).

The spelling of 121161711670 in words is "one hundred twenty-one billion, one hundred sixty-one million, seven hundred eleven thousand, six hundred seventy".