121211006700 has 72 divisors (see below), whose sum is σ = 400804402432. Its totient is φ = 27705372480.

The previous prime is 121211006681. The next prime is 121211006747. The reversal of 121211006700 is 7600112121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28857664 + ... + 28861863.

Almost surely, 2^121211006700 is an apocalyptic number.

121211006700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121211006700 is an abundant number, since it is smaller than the sum of its proper divisors (279593395732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121211006700 is a wasteful number, since it uses less digits than its factorization.

121211006700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57719551 (or 57719544 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 21.

Adding to 121211006700 its reverse (7600112121), we get a palindrome (128811118821).

The spelling of 121211006700 in words is "one hundred twenty-one billion, two hundred eleven million, six thousand, seven hundred".