121012010216 has 16 divisors (see below), whose sum is σ = 226926225540. Its totient is φ = 60498350080.

The previous prime is 121012010201. The next prime is 121012010219. The reversal of 121012010216 is 612010210121.

It can be written as a sum of positive squares in 2 ways, for example, as 119556892900 + 1455117316 = 345770^2 + 38146^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121012010194 and 121012010203.

It is not an unprimeable number, because it can be changed into a prime (121012010219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 889415 + ... + 1016406.

Almost surely, 2^121012010216 is an apocalyptic number.

It is an amenable number.

121012010216 is a deficient number, since it is larger than the sum of its proper divisors (105914215324).

121012010216 is a wasteful number, since it uses less digits than its factorization.

121012010216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913764 (or 1913760 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121012010216 its reverse (612010210121), we get a palindrome (733022220337).

The spelling of 121012010216 in words is "one hundred twenty-one billion, twelve million, ten thousand, two hundred sixteen".