1202221000 has 32 divisors (see below), whose sum is σ = 2813199480. Its totient is φ = 480888000.

The previous prime is 1202220997. The next prime is 1202221019. The reversal of 1202221000 is 1222021.

It can be written as a sum of positive squares in 4 ways, for example, as 60186564 + 1142034436 = 7758^2 + 33794^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600111 + ... + 602110.

Almost surely, 2^1202221000 is an apocalyptic number.

1202221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202221000 is an abundant number, since it is smaller than the sum of its proper divisors (1610978480).

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

1202221000 is a wasteful number, since it uses less digits than its factorization.

1202221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202242 (or 1202228 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1202221000 is about 34673.0587055714. The cubic root of 1202221000 is about 1063.3137664290.

Adding to 1202221000 its reverse (1222021), we get a palindrome (1203443021).

The spelling of 1202221000 in words is "one billion, two hundred two million, two hundred twenty-one thousand".