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BaseRepresentation
bin101111100110011101…
…0000100001001011100
3100202212000202201022122
41133030322010021130
53133322314134322
6114543220402112
710246104562313
oct1371472041134
9322760681278
10102222021212
113a396736573
1217989b46338
139840c814ac
144d3a1d127a
1529d4356442
hex17cce8425c

102222021212 has 12 divisors (see below), whose sum is σ = 179167618896. Its totient is φ = 51031272960.

The previous prime is 102222021191. The next prime is 102222021221. The reversal of 102222021212 is 212120222201.

Adding to 102222021212 its reverse (212120222201), we get a palindrome (314342243413).

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 3 ways as a sum of consecutive naturals, for example, 19931528 + ... + 19936655.

It is an arithmetic number, because the mean of its divisors is an integer number (14930634908).

Almost surely, 2102222021212 is an apocalyptic number.

It is an amenable number.

102222021212 is a deficient number, since it is larger than the sum of its proper divisors (76945597684).

102222021212 is a wasteful number, since it uses less digits than its factorization.

102222021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39868828 (or 39868826 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The spelling of 102222021212 in words is "one hundred two billion, two hundred twenty-two million, twenty-one thousand, two hundred twelve".