121210201210220 has 24 divisors (see below), whose sum is σ = 261420920449584. Its totient is φ = 47173699930176.

The previous prime is 121210201210193. The next prime is 121210201210223. The reversal of 121210201210220 is 22012102012121.

It is not an unprimeable number, because it can be changed into a prime (121210201210223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81898783862 + ... + 81898785341.

It is an arithmetic number, because the mean of its divisors is an integer number (10892538352066).

Almost surely, 2^{121210201210220} is an apocalyptic number.

121210201210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121210201210220 is an abundant number, since it is smaller than the sum of its proper divisors (140210719239364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121210201210220 is a wasteful number, since it uses less digits than its factorization.

121210201210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163797569249 (or 163797569247 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121210201210220 its reverse (22012102012121), we get a palindrome (143222303222341).

The spelling of 121210201210220 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred one million, two hundred ten thousand, two hundred twenty".