2100012021053 has 2 divisors, whose sum is σ = 2100012021054. Its totient is φ = 2100012021052.

The previous prime is 2100012020947. The next prime is 2100012021059. The reversal of 2100012021053 is 3501202100012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2027781696004 + 72230325049 = 1424002^2 + 268757^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100012021053 - 2¹² = 2100012016957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100012021059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050006010526 + 1050006010527.

It is an arithmetic number, because the mean of its divisors is an integer number (1050006010527).

Almost surely, 2^{2100012021053} is an apocalyptic number.

It is an amenable number.

2100012021053 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100012021053 is an equidigital number, since it uses as much as digits as its factorization.

2100012021053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 2100012021053 its reverse (3501202100012), we get a palindrome (5601214121065).

The spelling of 2100012021053 in words is "two trillion, one hundred billion, twelve million, twenty-one thousand, fifty-three".