1220002131 has 8 divisors (see below), whose sum is σ = 1682761680. Its totient is φ = 785288672.

The previous prime is 1220002097. The next prime is 1220002139. The reversal of 1220002131 is 1312000221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220002131 - 2⁹ = 1220001619 is a prime.

It is a super-2 number, since 2×1220002131² = 2976810399289082322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220002139) 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, 7011420 + ... + 7011593.

It is an arithmetic number, because the mean of its divisors is an integer number (210345210).

Almost surely, 2^1220002131 is an apocalyptic number.

1220002131 is a deficient number, since it is larger than the sum of its proper divisors (462759549).

1220002131 is a wasteful number, since it uses less digits than its factorization.

1220002131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14023045.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1220002131 is about 34928.5288983089. The cubic root of 1220002131 is about 1068.5303522897.

Adding to 1220002131 its reverse (1312000221), we get a palindrome (2532002352).

The spelling of 1220002131 in words is "one billion, two hundred twenty million, two thousand, one hundred thirty-one".