121222021221010 has 64 divisors (see below), whose sum is σ = 219584283609600. Its totient is φ = 48181983259392.

The previous prime is 121222021220977. The next prime is 121222021221011. The reversal of 121222021221010 is 10122120222121.

It is not an unprimeable number, because it can be changed into a prime (121222021221011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5453316576 + ... + 5453338804.

It is an arithmetic number, because the mean of its divisors is an integer number (3431004431400).

Almost surely, 2^{121222021221010} is an apocalyptic number.

121222021221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121222021221010 is a deficient number, since it is larger than the sum of its proper divisors (98362262388590).

121222021221010 is a wasteful number, since it uses less digits than its factorization.

121222021221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26995.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121222021221010 its reverse (10122120222121), we get a palindrome (131344141443131).

The spelling of 121222021221010 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, twenty-one million, two hundred twenty-one thousand, ten".