220204221021251 has 2 divisors, whose sum is σ = 220204221021252. Its totient is φ = 220204221021250.

The previous prime is 220204221021233. The next prime is 220204221021269. The reversal of 220204221021251 is 152120122402022.

It is a balanced prime because it is at equal distance from previous prime (220204221021233) and next prime (220204221021269).

It is a cyclic number.

It is not a de Polignac number, because 220204221021251 - 2²⁶ = 220204153912387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220204221021251.

It is not a weakly prime, because it can be changed into another prime (220204221921251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110102110510625 + 110102110510626.

It is an arithmetic number, because the mean of its divisors is an integer number (110102110510626).

Almost surely, 2^{220204221021251} is an apocalyptic number.

220204221021251 is a deficient number, since it is larger than the sum of its proper divisors (1).

220204221021251 is an equidigital number, since it uses as much as digits as its factorization.

220204221021251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 220204221021251 its reverse (152120122402022), we get a palindrome (372324343423273).

The spelling of 220204221021251 in words is "two hundred twenty trillion, two hundred four billion, two hundred twenty-one million, twenty-one thousand, two hundred fifty-one".