121311211030 has 32 divisors (see below), whose sum is σ = 234655737696. Its totient is φ = 44988455424.

The previous prime is 121311211027. The next prime is 121311211031. The reversal of 121311211030 is 30112113121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121311210995 and 121311211013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121311211031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5313949 + ... + 5336728.

It is an arithmetic number, because the mean of its divisors is an integer number (7332991803).

Almost surely, 2^121311211030 is an apocalyptic number.

121311211030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121311211030 is a deficient number, since it is larger than the sum of its proper divisors (113344526666).

121311211030 is a wasteful number, since it uses less digits than its factorization.

121311211030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10650768.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 121311211030 its reverse (30112113121), we get a palindrome (151423324151).

The spelling of 121311211030 in words is "one hundred twenty-one billion, three hundred eleven million, two hundred eleven thousand, thirty".