1202102221 has 16 divisors (see below), whose sum is σ = 1273079808. Its totient is φ = 1133366400.

The previous prime is 1202102191. The next prime is 1202102233. The reversal of 1202102221 is 1222012021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1202102221 - 2²¹ = 1200005069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202102021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337711 + ... + 341251.

It is an arithmetic number, because the mean of its divisors is an integer number (79567488).

Almost surely, 2^1202102221 is an apocalyptic number.

It is an amenable number.

1202102221 is a deficient number, since it is larger than the sum of its proper divisors (70977587).

1202102221 is a wasteful number, since it uses less digits than its factorization.

1202102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3852.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1202102221 is about 34671.3458204322. The cubic root of 1202102221 is about 1063.2787469372.

Adding to 1202102221 its reverse (1222012021), we get a palindrome (2424114242).

The spelling of 1202102221 in words is "one billion, two hundred two million, one hundred two thousand, two hundred twenty-one".