2123404501 has 2 divisors, whose sum is σ = 2123404502. Its totient is φ = 2123404500.

The previous prime is 2123404483. The next prime is 2123404523. The reversal of 2123404501 is 1054043212.

2123404501 = T₃₇₆₂₃ + T₃₇₆₂₄ + T₃₇₆₂₅.

It is an a-pointer prime, because the next prime (2123404523) can be obtained adding 2123404501 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1653642225 + 469762276 = 40665^2 + 21674^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123404501 - 2¹¹ = 2123402453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2123404531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061702250 + 1061702251.

It is an arithmetic number, because the mean of its divisors is an integer number (1061702251).

Almost surely, 2^2123404501 is an apocalyptic number.

2123404501 is the 37625-th centered triangular number.

It is an amenable number.

2123404501 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123404501 is an equidigital number, since it uses as much as digits as its factorization.

2123404501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2123404501 is about 46080.4134204545. The cubic root of 2123404501 is about 1285.3189518483.

Adding to 2123404501 its reverse (1054043212), we get a palindrome (3177447713).

The spelling of 2123404501 in words is "two billion, one hundred twenty-three million, four hundred four thousand, five hundred one".