122211021 has 16 divisors (see below), whose sum is σ = 177059840. Its totient is φ = 74694960.

The previous prime is 122210947. The next prime is 122211049. The reversal of 122211021 is 120112221.

It is not a de Polignac number, because 122211021 - 2¹⁵ = 122178253 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 122210988 and 122211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122211091) 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, 32815 + ... + 36348.

It is an arithmetic number, because the mean of its divisors is an integer number (11066240).

Almost surely, 2^122211021 is an apocalyptic number.

It is an amenable number.

122211021 is a deficient number, since it is larger than the sum of its proper divisors (54848819).

122211021 is a wasteful number, since it uses less digits than its factorization.

122211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69216.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 122211021 is about 11054.9093619079. The cubic root of 122211021 is about 496.2533567864.

Adding to 122211021 its reverse (120112221), we get a palindrome (242323242).

The spelling of 122211021 in words is "one hundred twenty-two million, two hundred eleven thousand, twenty-one".