1251201002 has 16 divisors (see below), whose sum is σ = 1884500424. Its totient is φ = 623040000.

The previous prime is 1251201001. The next prime is 1251201019. The reversal of 1251201002 is 2001021521.

It can be written as a sum of positive squares in 4 ways, for example, as 1013085241 + 238115761 = 31829^2 + 15431^2 .

It is not an unprimeable number, because it can be changed into a prime (1251201001) 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, 946502 + ... + 947822.

Almost surely, 2^1251201002 is an apocalyptic number.

1251201002 is a deficient number, since it is larger than the sum of its proper divisors (633299422).

1251201002 is a wasteful number, since it uses less digits than its factorization.

1251201002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2905.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 1251201002 is about 35372.3197147148. The cubic root of 1251201002 is about 1077.5622319664.

Adding to 1251201002 its reverse (2001021521), we get a palindrome (3252222523).

The spelling of 1251201002 in words is "one billion, two hundred fifty-one million, two hundred one thousand, two".