121201120203 has 32 divisors (see below), whose sum is σ = 175347244800. Its totient is φ = 74164823040.

The previous prime is 121201120199. The next prime is 121201120231. The reversal of 121201120203 is 302021102121.

It is not a de Polignac number, because 121201120203 - 2² = 121201120199 is a prime.

It is a super-2 number, since 2×121201120203² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121201120253) 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, 6403648 + ... + 6422546.

It is an arithmetic number, because the mean of its divisors is an integer number (5479601400).

Almost surely, 2^121201120203 is an apocalyptic number.

121201120203 is a deficient number, since it is larger than the sum of its proper divisors (54146124597).

121201120203 is a wasteful number, since it uses less digits than its factorization.

121201120203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22027.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 121201120203 its reverse (302021102121), we get a palindrome (423222222324).

The spelling of 121201120203 in words is "one hundred twenty-one billion, two hundred one million, one hundred twenty thousand, two hundred three".