121263620203 has 32 divisors (see below), whose sum is σ = 135197517312. Its totient is φ = 107845824000.

The previous prime is 121263620201. The next prime is 121263620207. The reversal of 121263620203 is 302026362121.

It is a cyclic number.

It is not a de Polignac number, because 121263620203 - 2¹ = 121263620201 is a prime.

It is a super-2 number, since 2×121263620203² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121263620201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67857876 + ... + 67859662.

It is an arithmetic number, because the mean of its divisors is an integer number (4224922416).

Almost surely, 2^121263620203 is an apocalyptic number.

121263620203 is a deficient number, since it is larger than the sum of its proper divisors (13933897109).

121263620203 is a wasteful number, since it uses less digits than its factorization.

121263620203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 121263620203 its reverse (302026362121), we get a palindrome (423289982324).

The spelling of 121263620203 in words is "one hundred twenty-one billion, two hundred sixty-three million, six hundred twenty thousand, two hundred three".