2077154221 has 2 divisors, whose sum is σ = 2077154222. Its totient is φ = 2077154220.

The previous prime is 2077154213. The next prime is 2077154227. The reversal of 2077154221 is 1224517702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2024010121 + 53144100 = 44989^2 + 7290^2 .

It is a cyclic number.

It is not a de Polignac number, because 2077154221 - 2³ = 2077154213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2077154227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1038577110 + 1038577111.

It is an arithmetic number, because the mean of its divisors is an integer number (1038577111).

Almost surely, 2^2077154221 is an apocalyptic number.

It is an amenable number.

2077154221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2077154221 is an equidigital number, since it uses as much as digits as its factorization.

2077154221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 2077154221 is about 45575.8074091946. The cubic root of 2077154221 is about 1275.9184403358.

The spelling of 2077154221 in words is "two billion, seventy-seven million, one hundred fifty-four thousand, two hundred twenty-one".