121001021012 has 12 divisors (see below), whose sum is σ = 211755985140. Its totient is φ = 60499310976.

The previous prime is 121001021003. The next prime is 121001021051. The reversal of 121001021012 is 210120100121.

It can be written as a sum of positive squares in 2 ways, for example, as 41230926916 + 79770094096 = 203054^2 + 282436^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121001020984 and 121001021002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49733 + ... + 494444.

It is an arithmetic number, because the mean of its divisors is an integer number (17646332095).

Almost surely, 2^121001021012 is an apocalyptic number.

It is an amenable number.

121001021012 is a deficient number, since it is larger than the sum of its proper divisors (90754964128).

121001021012 is a wasteful number, since it uses less digits than its factorization.

121001021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599770 (or 599768 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121001021012 its reverse (210120100121), we get a palindrome (331121121133).

The spelling of 121001021012 in words is "one hundred twenty-one billion, one million, twenty-one thousand, twelve".