1222000002 has 24 divisors (see below), whose sum is σ = 2687186736. Its totient is φ = 401253336.

The previous prime is 1221999997. The next prime is 1222000009. The reversal of 1222000002 is 2000002221.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1222000009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 505428 + ... + 507839.

It is an arithmetic number, because the mean of its divisors is an integer number (111966114).

Almost surely, 2^1222000002 is an apocalyptic number.

1222000002 is an abundant number, since it is smaller than the sum of its proper divisors (1465186734).

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

1222000002 is a wasteful number, since it uses less digits than its factorization.

1222000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013342 (or 1013339 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 1222000002 is about 34957.1166145035. The cubic root of 1222000002 is about 1069.1133079809.

Adding to 1222000002 its reverse (2000002221), we get a palindrome (3222002223).

The spelling of 1222000002 in words is "one billion, two hundred twenty-two million, two", and thus it is an aban number.