121021212121000 has 64 divisors (see below), whose sum is σ = 290096700762960. Its totient is φ = 47227790080000.

The previous prime is 121021212120967. The next prime is 121021212121003. The reversal of 121021212121000 is 121212120121.

It can be written as a sum of positive squares in 8 ways, for example, as 18726961981156 + 102294250139844 = 4327466^2 + 10114062^2 .

It is a super-2 number, since 2×121021212121000² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121021212121003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1475827441 + ... + 1475909440.

Almost surely, 2^{121021212121000} is an apocalyptic number.

121021212121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121021212121000 is an abundant number, since it is smaller than the sum of its proper divisors (169075488641960).

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

121021212121000 is a wasteful number, since it uses less digits than its factorization.

121021212121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2951736943 (or 2951736929 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121021212121000 its reverse (121212120121), we get a palindrome (121142424241121).

The spelling of 121021212121000 in words is "one hundred twenty-one trillion, twenty-one billion, two hundred twelve million, one hundred twenty-one thousand".