1010212021121 has 2 divisors, whose sum is σ = 1010212021122. Its totient is φ = 1010212021120.

The previous prime is 1010212021111. The next prime is 1010212021127. The reversal of 1010212021121 is 1211202120101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1007935681600 + 2276339521 = 1003960^2 + 47711^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1010212021121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1010212021096 and 1010212021105.

It is not a weakly prime, because it can be changed into another prime (1010212021127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505106010560 + 505106010561.

It is an arithmetic number, because the mean of its divisors is an integer number (505106010561).

Almost surely, 2^{1010212021121} is an apocalyptic number.

It is an amenable number.

1010212021121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010212021121 is an equidigital number, since it uses as much as digits as its factorization.

1010212021121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1010212021121 its reverse (1211202120101), we get a palindrome (2221414141222).

The spelling of 1010212021121 in words is "one trillion, ten billion, two hundred twelve million, twenty-one thousand, one hundred twenty-one".