121203430111010 has 32 divisors (see below), whose sum is σ = 234989750706480. Its totient is φ = 44744118951168.

The previous prime is 121203430110941. The next prime is 121203430111033. The reversal of 121203430111010 is 10111034302121.

It can be written as a sum of positive squares in 8 ways, for example, as 37890512647729 + 83312917463281 = 6155527^2 + 9127591^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81728765 + ... + 83198544.

Almost surely, 2^{121203430111010} is an apocalyptic number.

121203430111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121203430111010 is a deficient number, since it is larger than the sum of its proper divisors (113786320595470).

121203430111010 is a wasteful number, since it uses less digits than its factorization.

121203430111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164932982.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 121203430111010 its reverse (10111034302121), we get a palindrome (131314464413131).

The spelling of 121203430111010 in words is "one hundred twenty-one trillion, two hundred three billion, four hundred thirty million, one hundred eleven thousand, ten".