1011012201 has 12 divisors (see below), whose sum is σ = 1466902528. Its totient is φ = 670984344.

The previous prime is 1011012157. The next prime is 1011012229. The reversal of 1011012201 is 1022101101.

It is a happy number.

It is not a de Polignac number, because 1011012201 - 2¹⁹ = 1010487913 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011012251) 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, 249865 + ... + 253878.

Almost surely, 2^1011012201 is an apocalyptic number.

It is an amenable number.

1011012201 is a deficient number, since it is larger than the sum of its proper divisors (455890327).

1011012201 is a wasteful number, since it uses less digits than its factorization.

1011012201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503972 (or 503969 counting only the distinct ones).

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

The square root of 1011012201 is about 31796.4180529820. The cubic root of 1011012201 is about 1003.6573412149.

Adding to 1011012201 its reverse (1022101101), we get a palindrome (2033113302).

Subtracting 1011012201 from its reverse (1022101101), we obtain a square (11088900 = 3330²).

The spelling of 1011012201 in words is "one billion, eleven million, twelve thousand, two hundred one".