121021201222010 has 16 divisors (see below), whose sum is σ = 230652171741096. Its totient is φ = 45560922812928.

The previous prime is 121021201221997. The next prime is 121021201222049. The reversal of 121021201222010 is 10222102120121.

It can be written as a sum of positive squares in 4 ways, for example, as 100747371215401 + 20273830006609 = 10037299^2 + 4502647^2 .

It is a super-2 number, since 2×121021201222010² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 121021201222010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355944709307 + ... + 355944709646.

Almost surely, 2^{121021201222010} is an apocalyptic number.

121021201222010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121021201222010 is a deficient number, since it is larger than the sum of its proper divisors (109630970519086).

121021201222010 is a wasteful number, since it uses less digits than its factorization.

121021201222010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711889418977.

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

Adding to 121021201222010 its reverse (10222102120121), we get a palindrome (131243303342131).

The spelling of 121021201222010 in words is "one hundred twenty-one trillion, twenty-one billion, two hundred one million, two hundred twenty-two thousand, ten".