101220112001000 has 32 divisors (see below), whose sum is σ = 236855062084680. Its totient is φ = 40488044800000.

The previous prime is 101220112000939. The next prime is 101220112001003. The reversal of 101220112001000 is 100211022101.

It can be written as a sum of positive squares in 4 ways, for example, as 18856246694884 + 82363865306116 = 4342378^2 + 9075454^2 .

It is a super-2 number, since 2×101220112001000² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101220112001003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50610055001 + ... + 50610057000.

Almost surely, 2^{101220112001000} is an apocalyptic number.

101220112001000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101220112001000 is an abundant number, since it is smaller than the sum of its proper divisors (135634950083680).

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

101220112001000 is a wasteful number, since it uses less digits than its factorization.

101220112001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101220112022 (or 101220112008 counting only the distinct ones).

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

Adding to 101220112001000 its reverse (100211022101), we get a palindrome (101320323023101).

The spelling of 101220112001000 in words is "one hundred one trillion, two hundred twenty billion, one hundred twelve million, one thousand".