1202135221 has 8 divisors (see below), whose sum is σ = 1374729344. Its totient is φ = 1029756240.

The previous prime is 1202135213. The next prime is 1202135251. The reversal of 1202135221 is 1225312021.

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 1202135221 - 2³ = 1202135213 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 (1202135251) 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, 41625 + ... + 64318.

It is an arithmetic number, because the mean of its divisors is an integer number (171841168).

Almost surely, 2^1202135221 is an apocalyptic number.

It is an amenable number.

1202135221 is a deficient number, since it is larger than the sum of its proper divisors (172594123).

1202135221 is a wasteful number, since it uses less digits than its factorization.

1202135221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107571.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1202135221 is about 34671.8217144701. The cubic root of 1202135221 is about 1063.2884765250.

Adding to 1202135221 its reverse (1225312021), we get a palindrome (2427447242).

The spelling of 1202135221 in words is "one billion, two hundred two million, one hundred thirty-five thousand, two hundred twenty-one".