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2021202149 is a prime number
BaseRepresentation
bin111100001111001…
…0001100011100101
312012212020201002212
41320132101203211
513114411432044
6532321213205
7101041635431
oct17036214345
95185221085
102021202149
11947a090aa
12484a91205
1326298ba05
141526179c1
15bc69ea9e
hex787918e5

2021202149 has 2 divisors, whose sum is σ = 2021202150. Its totient is φ = 2021202148.

The previous prime is 2021202137. The next prime is 2021202167. The reversal of 2021202149 is 9412021202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1040385025 + 980817124 = 32255^2 + 31318^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2021202149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021202109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010601074 + 1010601075.

It is an arithmetic number, because the mean of its divisors is an integer number (1010601075).

Almost surely, 22021202149 is an apocalyptic number.

It is an amenable number.

2021202149 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021202149 is an equidigital number, since it uses as much as digits as its factorization.

2021202149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 2021202149 is about 44957.7818514215. The cubic root of 2021202149 is about 1264.3575816033.

The spelling of 2021202149 in words is "two billion, twenty-one million, two hundred two thousand, one hundred forty-nine".