101011221012 has 48 divisors (see below), whose sum is σ = 254590035392. Its totient is φ = 30986461440.

The previous prime is 101011221011. The next prime is 101011221019. The reversal of 101011221012 is 210122110101.

It is a super-3 number, since 3×101011221012³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101011221011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 926473 + ... + 1029744.

Almost surely, 2^101011221012 is an apocalyptic number.

101011221012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101011221012 is an abundant number, since it is smaller than the sum of its proper divisors (153578814380).

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

101011221012 is a wasteful number, since it uses less digits than its factorization.

101011221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956568 (or 1956566 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 101011221012 its reverse (210122110101), we get a palindrome (311133331113).

The spelling of 101011221012 in words is "one hundred one billion, eleven million, two hundred twenty-one thousand, twelve".