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2111021000009 is a prime number
BaseRepresentation
bin11110101110000010101…
…010000010010101001001
321110210220200110000001022
4132232002222002111021
5234041332334000014
64253442322202225
7305342032301645
oct36560252022511
97423820400038
102111021000009
11744308358359
122a11687b3375
131240b7441a9c
14742614c9c25
1539da4a53a8e
hex1eb82a82549

2111021000009 has 2 divisors, whose sum is σ = 2111021000010. Its totient is φ = 2111021000008.

The previous prime is 2111020999987. The next prime is 2111021000029. The reversal of 2111021000009 is 9000001201112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1172137518409 + 938883481600 = 1082653^2 + 968960^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111021000009 - 228 = 2110752564553 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111021000029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055510500004 + 1055510500005.

It is an arithmetic number, because the mean of its divisors is an integer number (1055510500005).

Almost surely, 22111021000009 is an apocalyptic number.

It is an amenable number.

2111021000009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111021000009 is an equidigital number, since it uses as much as digits as its factorization.

2111021000009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 2111021000009 in words is "two trillion, one hundred eleven billion, twenty-one million, nine", and thus it is an aban number.