1011021212 has 24 divisors (see below), whose sum is σ = 1954816416. Its totient is φ = 455088128.

The previous prime is 1011021199. The next prime is 1011021233. The reversal of 1011021212 is 2121201101.

It is a super-2 number, since 2×1011021212² = 2044327782227897888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1011021193 and 1011021202.

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, 321653 + ... + 324780.

It is an arithmetic number, because the mean of its divisors is an integer number (81450684).

Almost surely, 2^1011021212 is an apocalyptic number.

It is an amenable number.

1011021212 is a deficient number, since it is larger than the sum of its proper divisors (943795204).

1011021212 is a wasteful number, since it uses less digits than its factorization.

1011021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646477 (or 646475 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1011021212 is about 31796.5597510171. The cubic root of 1011021212 is about 1003.6603230218.

Adding to 1011021212 its reverse (2121201101), we get a palindrome (3132222313).

The spelling of 1011021212 in words is "one billion, eleven million, twenty-one thousand, two hundred twelve".