2121233232101 has 2 divisors, whose sum is σ = 2121233232102. Its totient is φ = 2121233232100.

The previous prime is 2121233232059. The next prime is 2121233232197. The reversal of 2121233232101 is 1012323321212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1758740130625 + 362493101476 = 1326175^2 + 602074^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121233232101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121233238101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060616616050 + 1060616616051.

It is an arithmetic number, because the mean of its divisors is an integer number (1060616616051).

Almost surely, 2^{2121233232101} is an apocalyptic number.

It is an amenable number.

2121233232101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121233232101 is an equidigital number, since it uses as much as digits as its factorization.

2121233232101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2121233232101 its reverse (1012323321212), we get a palindrome (3133556553313).

The spelling of 2121233232101 in words is "two trillion, one hundred twenty-one billion, two hundred thirty-three million, two hundred thirty-two thousand, one hundred one".