1242022202421 has 96 divisors (see below), whose sum is σ = 2300876438784. Its totient is φ = 579477888000.

The previous prime is 1242022202413. The next prime is 1242022202441.

1242022202421 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1242022202421 - 2³ = 1242022202413 is a prime.

It is a super-2 number, since 2×1242022202421² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1242022202391 and 1242022202400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242022202411) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 714121 + ... + 1730321.

It is an arithmetic number, because the mean of its divisors is an integer number (23967462904).

Almost surely, 2^{1242022202421} is an apocalyptic number.

1242022202421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1242022202421 is a deficient number, since it is larger than the sum of its proper divisors (1058854236363).

1242022202421 is a wasteful number, since it uses less digits than its factorization.

1242022202421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016283 (or 1016272 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The spelling of 1242022202421 in words is "one trillion, two hundred forty-two billion, twenty-two million, two hundred two thousand, four hundred twenty-one".