1202121221010 has 64 divisors (see below), whose sum is σ = 2963309025024. Its totient is φ = 311876179200.

The previous prime is 1202121221009. The next prime is 1202121221027. The reversal of 1202121221010 is 101221212021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16192275 + ... + 16266345.

It is an arithmetic number, because the mean of its divisors is an integer number (46301703516).

Almost surely, 2^{1202121221010} is an apocalyptic number.

1202121221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1202121221010 is an abundant number, since it is smaller than the sum of its proper divisors (1761187804014).

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

1202121221010 is a wasteful number, since it uses less digits than its factorization.

1202121221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88739.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1202121221010 its reverse (101221212021), we get a palindrome (1303342433031).

The spelling of 1202121221010 in words is "one trillion, two hundred two billion, one hundred twenty-one million, two hundred twenty-one thousand, ten".