1221020141430 has 64 divisors (see below), whose sum is σ = 3135251116800. Its totient is φ = 303411381120.

The previous prime is 1221020141423. The next prime is 1221020141443. The reversal of 1221020141430 is 341410201221.

It is a junction number, because it is equal to n+sod(n) for n = 1221020141397 and 1221020141406.

It is a congruent number.

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, 17523760 + ... + 17593299.

It is an arithmetic number, because the mean of its divisors is an integer number (48988298700).

Almost surely, 2^{1221020141430} is an apocalyptic number.

1221020141430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221020141430 is an abundant number, since it is smaller than the sum of its proper divisors (1914230975370).

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

1221020141430 is a wasteful number, since it uses less digits than its factorization.

1221020141430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35117149.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1221020141430 its reverse (341410201221), we get a palindrome (1562430342651).

The spelling of 1221020141430 in words is "one trillion, two hundred twenty-one billion, twenty million, one hundred forty-one thousand, four hundred thirty".