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BaseRepresentation
bin100100010111000…
…0000011111110100
310011000200110002210
41020232000133310
54444311121322
6321021133420
742143000145
oct11056003764
93130613083
101220020212
11576740274
122a06ba270
131659b3b68
14b8061acc
157219270c
hex48b807f4

1220020212 has 48 divisors (see below), whose sum is σ = 2869352640. Its totient is φ = 403452672.

The previous prime is 1220020199. The next prime is 1220020247. The reversal of 1220020212 is 2120200221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1344663 + ... + 1345569.

It is an arithmetic number, because the mean of its divisors is an integer number (59778180).

Almost surely, 21220020212 is an apocalyptic number.

1220020212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220020212 is an abundant number, since it is smaller than the sum of its proper divisors (1649332428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220020212 is a wasteful number, since it uses less digits than its factorization.

1220020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680 (or 1678 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1220020212 is about 34928.7877258859. The cubic root of 1220020212 is about 1068.5356309695.

Adding to 1220020212 its reverse (2120200221), we get a palindrome (3340220433).

Subtracting 1220020212 from its reverse (2120200221), we obtain a square (900180009 = 300032).

The spelling of 1220020212 in words is "one billion, two hundred twenty million, twenty thousand, two hundred twelve".