2121011012 has 6 divisors (see below), whose sum is σ = 3711769278. Its totient is φ = 1060505504.

The previous prime is 2121010973. The next prime is 2121011071. The reversal of 2121011012 is 2101101212.

It can be written as a sum of positive squares in only one way, i.e., 1388009536 + 733001476 = 37256^2 + 27074^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2121010984 and 2121011002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265126373 + ... + 265126380.

It is an arithmetic number, because the mean of its divisors is an integer number (618628213).

Almost surely, 2^2121011012 is an apocalyptic number.

It is an amenable number.

2121011012 is a deficient number, since it is larger than the sum of its proper divisors (1590758266).

2121011012 is a wasteful number, since it uses less digits than its factorization.

2121011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530252757 (or 530252755 counting only the distinct ones).

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

The square root of 2121011012 is about 46054.4353130076. The cubic root of 2121011012 is about 1284.8358356397.

Adding to 2121011012 its reverse (2101101212), we get a palindrome (4222112224).

The spelling of 2121011012 in words is "two billion, one hundred twenty-one million, eleven thousand, twelve".