1020121402203 has 24 divisors (see below), whose sum is σ = 1504818207360. Its totient is φ = 665781705600.

The previous prime is 1020121402187. The next prime is 1020121402211. The reversal of 1020121402203 is 3022041210201.

It is a happy number.

It is not a de Polignac number, because 1020121402203 - 2⁴ = 1020121402187 is a prime.

It is a super-2 number, since 2×1020121402203² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1020121402283) 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, 6223851 + ... + 6385652.

It is an arithmetic number, because the mean of its divisors is an integer number (62700758640).

Almost surely, 2^{1020121402203} is an apocalyptic number.

1020121402203 is a deficient number, since it is larger than the sum of its proper divisors (484696805157).

1020121402203 is a wasteful number, since it uses less digits than its factorization.

1020121402203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12609699 (or 12609696 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1020121402203 its reverse (3022041210201), we get a palindrome (4042162612404).

The spelling of 1020121402203 in words is "one trillion, twenty billion, one hundred twenty-one million, four hundred two thousand, two hundred three".