1011001212 has 36 divisors (see below), whose sum is σ = 2752171240. Its totient is φ = 311077152.

The previous prime is 1011001183. The next prime is 1011001217. The reversal of 1011001212 is 2121001101.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1011001194 and 1011001203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011001217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1079662 + ... + 1080597.

Almost surely, 2^1011001212 is an apocalyptic number.

1011001212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1011001212 is an abundant number, since it is smaller than the sum of its proper divisors (1741170028).

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

1011001212 is a wasteful number, since it uses less digits than its factorization.

1011001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160282 (or 2160277 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1011001212 is about 31796.2452500291. The cubic root of 1011001212 is about 1003.6537048491.

Adding to 1011001212 its reverse (2121001101), we get a palindrome (3132002313).

The spelling of 1011001212 in words is "one billion, eleven million, one thousand, two hundred twelve".