204421214012153 has 2 divisors, whose sum is σ = 204421214012154. Its totient is φ = 204421214012152.

The previous prime is 204421214012123. The next prime is 204421214012243. The reversal of 204421214012153 is 351210412124402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204398118523369 + 23095488784 = 14296787^2 + 151972^2 .

It is a cyclic number.

It is not a de Polignac number, because 204421214012153 - 2¹⁰ = 204421214011129 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (204421214012123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102210607006076 + 102210607006077.

It is an arithmetic number, because the mean of its divisors is an integer number (102210607006077).

Almost surely, 2^{204421214012153} is an apocalyptic number.

It is an amenable number.

204421214012153 is a deficient number, since it is larger than the sum of its proper divisors (1).

204421214012153 is an equidigital number, since it uses as much as digits as its factorization.

204421214012153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15360, while the sum is 32.

Adding to 204421214012153 its reverse (351210412124402), we get a palindrome (555631626136555).

The spelling of 204421214012153 in words is "two hundred four trillion, four hundred twenty-one billion, two hundred fourteen million, twelve thousand, one hundred fifty-three".