1000121021402 has 16 divisors (see below), whose sum is σ = 1506312085824. Its totient is φ = 498017400000.

The previous prime is 1000121021369. The next prime is 1000121021407. The reversal of 1000121021402 is 2041201210001.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1000121021407) 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, 5084627 + ... + 5277657.

It is an arithmetic number, because the mean of its divisors is an integer number (94144505364).

Almost surely, 2^{1000121021402} is an apocalyptic number.

1000121021402 is a deficient number, since it is larger than the sum of its proper divisors (506191064422).

1000121021402 is a wasteful number, since it uses less digits than its factorization.

1000121021402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203605.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1000121021402 its reverse (2041201210001), we get a palindrome (3041322231403).

The spelling of 1000121021402 in words is "one trillion, one hundred twenty-one million, twenty-one thousand, four hundred two".