122221012 has 6 divisors (see below), whose sum is σ = 213886778. Its totient is φ = 61110504.

The previous prime is 122220983. The next prime is 122221019. The reversal of 122221012 is 210122221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 121793296 + 427716 = 11036^2 + 654^2 .

It is a junction number, because it is equal to n+sod(n) for n = 122220983 and 122221001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15277623 + ... + 15277630.

Almost surely, 2^122221012 is an apocalyptic number.

It is an amenable number.

122221012 is a deficient number, since it is larger than the sum of its proper divisors (91665766).

122221012 is a wasteful number, since it uses less digits than its factorization.

122221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30555257 (or 30555255 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 122221012 is about 11055.3612333564. The cubic root of 122221012 is about 496.2668796590.

Adding to 122221012 its reverse (210122221), we get a palindrome (332343233).

The spelling of 122221012 in words is "one hundred twenty-two million, two hundred twenty-one thousand, twelve".