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1021001000212 = 221915361874567
BaseRepresentation
bin11101101101110000110…
…01101110010100010100
310121121101022111202212201
432312320121232110110
5113212002224001322
62101012534454244
7133523233210624
oct16667031562424
93547338452781
101021001000212
113640054a1216
12145a63204384
137538417099b
14375b965a884
151b85a30ed27
hexedb866e514

1021001000212 has 24 divisors (see below), whose sum is σ = 1880915906240. Its totient is φ = 483600015360.

The previous prime is 1021001000209. The next prime is 1021001000237. The reversal of 1021001000212 is 2120001001201.

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, 730153 + ... + 1604719.

Almost surely, 21021001000212 is an apocalyptic number.

It is an amenable number.

1021001000212 is a deficient number, since it is larger than the sum of its proper divisors (859914906028).

1021001000212 is a wasteful number, since it uses less digits than its factorization.

1021001000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889951 (or 889949 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1021001000212 its reverse (2120001001201), we get a palindrome (3141002001413).

The spelling of 1021001000212 in words is "one trillion, twenty-one billion, one million, two hundred twelve", and thus it is an aban number.

Divisors: 1 2 4 19 38 76 15361 30722 61444 291859 583718 874567 1167436 1749134 3498268 16616773 33233546 66467092 13434223687 26868447374 53736894748 255250250053 510500500106 1021001000212