121111220201010 has 32 divisors (see below), whose sum is σ = 313025922982080. Its totient is φ = 29811992664768.

The previous prime is 121111220201003. The next prime is 121111220201057. The reversal of 121111220201010 is 10102022111121.

It is a happy number.

121111220201010 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155270794740 + ... + 155270795519.

It is an arithmetic number, because the mean of its divisors is an integer number (9782060093190).

Almost surely, 2^{121111220201010} is an apocalyptic number.

121111220201010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121111220201010 is an abundant number, since it is smaller than the sum of its proper divisors (191914702781070).

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

121111220201010 is a wasteful number, since it uses less digits than its factorization.

121111220201010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310541590282.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121111220201010 its reverse (10102022111121), we get a palindrome (131213242312131).

The spelling of 121111220201010 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred twenty million, two hundred one thousand, ten".