121203211312 has 10 divisors (see below), whose sum is σ = 234831221948. Its totient is φ = 60601605648.

The previous prime is 121203211309. The next prime is 121203211331. The reversal of 121203211312 is 213112302121.

It is a super-2 number, since 2×121203211312² (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 121203211312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3787600338 + ... + 3787600369.

Almost surely, 2^121203211312 is an apocalyptic number.

It is an amenable number.

121203211312 is a deficient number, since it is larger than the sum of its proper divisors (113628010636).

121203211312 is an equidigital number, since it uses as much as digits as its factorization.

121203211312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7575200715 (or 7575200709 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121203211312 its reverse (213112302121), we get a palindrome (334315513433).

The spelling of 121203211312 in words is "one hundred twenty-one billion, two hundred three million, two hundred eleven thousand, three hundred twelve".