1012221134021 has 2 divisors, whose sum is σ = 1012221134022. Its totient is φ = 1012221134020.

The previous prime is 1012221133997. The next prime is 1012221134059. The reversal of 1012221134021 is 1204311222101.

1012221134021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 637969612900 + 374251521121 = 798730^2 + 611761^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012221134021 - 2³⁸ = 737343227077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1012221133984 and 1012221134002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012281134021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506110567010 + 506110567011.

It is an arithmetic number, because the mean of its divisors is an integer number (506110567011).

Almost surely, 2^{1012221134021} is an apocalyptic number.

It is an amenable number.

1012221134021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012221134021 is an equidigital number, since it uses as much as digits as its factorization.

1012221134021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1012221134021 its reverse (1204311222101), we get a palindrome (2216532356122).

The spelling of 1012221134021 in words is "one trillion, twelve billion, two hundred twenty-one million, one hundred thirty-four thousand, twenty-one".