121211020986 has 64 divisors (see below), whose sum is σ = 282061180800. Its totient is φ = 34317608960.

The previous prime is 121211020981. The next prime is 121211021011. The reversal of 121211020986 is 689020112121.

It is a super-2 number, since 2×121211020986² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (121211020981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240561 + ... + 547988.

It is an arithmetic number, because the mean of its divisors is an integer number (4407205950).

Almost surely, 2^121211020986 is an apocalyptic number.

121211020986 is an abundant number, since it is smaller than the sum of its proper divisors (160850159814).

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

121211020986 is a wasteful number, since it uses less digits than its factorization.

121211020986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788719.

The product of its (nonzero) digits is 3456, while the sum is 33.

The spelling of 121211020986 in words is "one hundred twenty-one billion, two hundred eleven million, twenty thousand, nine hundred eighty-six".