1012221222 has 16 divisors (see below), whose sum is σ = 2025387840. Its totient is φ = 337249512.

The previous prime is 1012221211. The next prime is 1012221229. The reversal of 1012221222 is 2221222101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012221229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25072 + ... + 51507.

It is an arithmetic number, because the mean of its divisors is an integer number (126586740).

Almost surely, 2^1012221222 is an apocalyptic number.

1012221222 is an abundant number, since it is smaller than the sum of its proper divisors (1013166618).

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

1012221222 is a wasteful number, since it uses less digits than its factorization.

1012221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78787.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1012221222 is about 31815.4242781705. The cubic root of 1012221222 is about 1004.0572570691.

Adding to 1012221222 its reverse (2221222101), we get a palindrome (3233443323).

It can be divided in two parts, 101 and 2221222, that multiplied together give a palindrome (224343422).

The spelling of 1012221222 in words is "one billion, twelve million, two hundred twenty-one thousand, two hundred twenty-two".