121220212221010 has 32 divisors (see below), whose sum is σ = 249374532794112. Its totient is φ = 41560009104960.

The previous prime is 121220212220993. The next prime is 121220212221107. The reversal of 121220212221010 is 10122212022121.

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, 22705497 + ... + 27531436.

It is an arithmetic number, because the mean of its divisors is an integer number (7792954149816).

Almost surely, 2^{121220212221010} is an apocalyptic number.

121220212221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121220212221010 is an abundant number, since it is smaller than the sum of its proper divisors (128154320573102).

121220212221010 is a wasteful number, since it uses less digits than its factorization.

121220212221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50271418.

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

Adding to 121220212221010 its reverse (10122212022121), we get a palindrome (131342424243131).

The spelling of 121220212221010 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred twelve million, two hundred twenty-one thousand, ten".