122010861 has 16 divisors (see below), whose sum is σ = 186076800. Its totient is φ = 69662208.

The previous prime is 122010857. The next prime is 122010881. The reversal of 122010861 is 168010221.

It is not a de Polignac number, because 122010861 - 2² = 122010857 is a prime.

It is a super-2 number, since 2×122010861² = 29773300403922642, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122010841) 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 15 ways as a sum of consecutive naturals, for example, 43345 + ... + 46073.

It is an arithmetic number, because the mean of its divisors is an integer number (11629800).

Almost surely, 2^122010861 is an apocalyptic number.

It is an amenable number.

122010861 is a deficient number, since it is larger than the sum of its proper divisors (64065939).

122010861 is a wasteful number, since it uses less digits than its factorization.

122010861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4868.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 122010861 is about 11045.8526606143. The cubic root of 122010861 is about 495.9822837173.

The spelling of 122010861 in words is "one hundred twenty-two million, ten thousand, eight hundred sixty-one".