121011200221010 has 48 divisors (see below), whose sum is σ = 240947142063768. Its totient is φ = 43723792020480.

The previous prime is 121011200220983. The next prime is 121011200221013. The reversal of 121011200221010 is 10122002110121.

It can be written as a sum of positive squares in 4 ways, for example, as 108124414127521 + 12886786093489 = 10398289^2 + 3589817^2 .

It is not an unprimeable number, because it can be changed into a prime (121011200221013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 318310847 + ... + 318690786.

Almost surely, 2^{121011200221010} is an apocalyptic number.

121011200221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121011200221010 is a deficient number, since it is larger than the sum of its proper divisors (119935941842758).

121011200221010 is a wasteful number, since it uses less digits than its factorization.

121011200221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637001819 (or 637001808 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121011200221010 its reverse (10122002110121), we get a palindrome (131133202331131).

The spelling of 121011200221010 in words is "one hundred twenty-one trillion, eleven billion, two hundred million, two hundred twenty-one thousand, ten".