121231230202 has 8 divisors (see below), whose sum is σ = 181850412276. Its totient is φ = 60614426112.

The previous prime is 121231230181. The next prime is 121231230233. The reversal of 121231230202 is 202032132121.

It can be written as a sum of positive squares in 2 ways, for example, as 120597147441 + 634082761 = 347271^2 + 25181^2 .

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

It is a super-2 number, since 2×121231230202² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121231230202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461053 + ... + 674560.

Almost surely, 2^121231230202 is an apocalyptic number.

121231230202 is a deficient number, since it is larger than the sum of its proper divisors (60619182074).

121231230202 is a wasteful number, since it uses less digits than its factorization.

121231230202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188992.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 121231230202 its reverse (202032132121), we get a palindrome (323263362323).

The spelling of 121231230202 in words is "one hundred twenty-one billion, two hundred thirty-one million, two hundred thirty thousand, two hundred two".