Base | Representation |
---|---|
bin | 100000010011100011101… |
… | …000001111011111100111 |
3 | 21212020021011020200221111 |
4 | 200103203220033133213 |
5 | 242333101124230431 |
6 | 4415510350125451 |
7 | 316251134341201 |
oct | 40234350173747 |
9 | 7766234220844 |
10 | 2220022101991 |
11 | 786562667611 |
12 | 2ba308ab0887 |
13 | 1314689c9275 |
14 | 79641b6b771 |
15 | 3cb340d67b1 |
hex | 204e3a0f7e7 |
2220022101991 has 2 divisors, whose sum is σ = 2220022101992. Its totient is φ = 2220022101990.
The previous prime is 2220022101989. The next prime is 2220022102037. The reversal of 2220022101991 is 1991012200222.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 2220022101991 - 21 = 2220022101989 is a prime.
Together with 2220022101989, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (2220022101901) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110011050995 + 1110011050996.
It is an arithmetic number, because the mean of its divisors is an integer number (1110011050996).
Almost surely, 22220022101991 is an apocalyptic number.
2220022101991 is a deficient number, since it is larger than the sum of its proper divisors (1).
2220022101991 is an equidigital number, since it uses as much as digits as its factorization.
2220022101991 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 2592, while the sum is 31.
The spelling of 2220022101991 in words is "two trillion, two hundred twenty billion, twenty-two million, one hundred one thousand, nine hundred ninety-one".
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