121020021202 has 8 divisors (see below), whose sum is σ = 181531964412. Its totient is φ = 60509366400.

The previous prime is 121020021193. The next prime is 121020021247. The reversal of 121020021202 is 202120020121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 119673791721 + 1346229481 = 345939^2 + 36691^2 .

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

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, 36699 + ... + 493342.

Almost surely, 2^121020021202 is an apocalyptic number.

121020021202 is a deficient number, since it is larger than the sum of its proper divisors (60511943210).

121020021202 is a wasteful number, since it uses less digits than its factorization.

121020021202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644204.

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

Adding to 121020021202 its reverse (202120020121), we get a palindrome (323140041323).

The spelling of 121020021202 in words is "one hundred twenty-one billion, twenty million, twenty-one thousand, two hundred two".