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1220025223 is a prime number
BaseRepresentation
bin100100010111000…
…0001101110000111
310011000200200222101
41020232001232013
54444311301343
6321021212531
742143020564
oct11056015607
93130620871
101220025223
1157674400a
122a0701147
131659b6221
14b806386b
1572193e4d
hex48b81b87

1220025223 has 2 divisors, whose sum is σ = 1220025224. Its totient is φ = 1220025222.

The previous prime is 1220025211. The next prime is 1220025227. The reversal of 1220025223 is 3225200221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220025223 - 29 = 1220024711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1220025223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220025227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610012611 + 610012612.

It is an arithmetic number, because the mean of its divisors is an integer number (610012612).

Almost surely, 21220025223 is an apocalyptic number.

1220025223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220025223 is an equidigital number, since it uses as much as digits as its factorization.

1220025223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 1220025223 is about 34928.8594574744. The cubic root of 1220025223 is about 1068.5370939029.

Adding to 1220025223 its reverse (3225200221), we get a palindrome (4445225444).

The spelling of 1220025223 in words is "one billion, two hundred twenty million, twenty-five thousand, two hundred twenty-three".