1001200221010 has 32 divisors (see below), whose sum is σ = 2011713941952. Its totient is φ = 355605996480.

The previous prime is 1001200220963. The next prime is 1001200221019. The reversal of 1001200221010 is 101220021001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (1001200221019) 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, 105830389 + ... + 105839848.

It is an arithmetic number, because the mean of its divisors is an integer number (62866060686).

Almost surely, 2^{1001200221010} is an apocalyptic number.

1001200221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001200221010 is an abundant number, since it is smaller than the sum of its proper divisors (1010513720942).

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

1001200221010 is a wasteful number, since it uses less digits than its factorization.

1001200221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211670298.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1001200221010 its reverse (101220021001), we get a palindrome (1102420242011).

The spelling of 1001200221010 in words is "one trillion, one billion, two hundred million, two hundred twenty-one thousand, ten".