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221021020102 = 27391117133877
BaseRepresentation
bin1100110111010111100…
…0010001111111000110
3210010111100001011000111
43031311320101333012
512110122340120402
6245311411303234
721653051446621
oct3156570217706
9703440034014
10221021020102
1185809670793
1236a035aab1a
1317ac43b37cc
14a9a9c26db8
155b38b749d7
hex3375e11fc6

221021020102 has 16 divisors (see below), whose sum is σ = 332279840880. Its totient is φ = 110261344608.

The previous prime is 221021020081. The next prime is 221021020117. The reversal of 221021020102 is 201020120122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1583988 + ... + 1717864.

It is an arithmetic number, because the mean of its divisors is an integer number (20767490055).

Almost surely, 2221021020102 is an apocalyptic number.

221021020102 is a deficient number, since it is larger than the sum of its proper divisors (111258820778).

221021020102 is a wasteful number, since it uses less digits than its factorization.

221021020102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135735.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221021020102 its reverse (201020120122), we get a palindrome (422041140224).

The spelling of 221021020102 in words is "two hundred twenty-one billion, twenty-one million, twenty thousand, one hundred two".

Divisors: 1 2 739 1117 1478 2234 133877 267754 825463 1650926 98935103 149540609 197870206 299081218 110510510051 221021020102