1220211043040 has 96 divisors (see below), whose sum is σ = 3191754513024. Its totient is φ = 437090480640.

The previous prime is 1220211043031. The next prime is 1220211043087. The reversal of 1220211043040 is 403401120221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5055974 + ... + 5291813.

It is an arithmetic number, because the mean of its divisors is an integer number (33247442844).

Almost surely, 2^{1220211043040} is an apocalyptic number.

1220211043040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220211043040 is an abundant number, since it is smaller than the sum of its proper divisors (1971543469984).

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

1220211043040 is a wasteful number, since it uses less digits than its factorization.

1220211043040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10347880 (or 10347872 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1220211043040 its reverse (403401120221), we get a palindrome (1623612163261).

The spelling of 1220211043040 in words is "one trillion, two hundred twenty billion, two hundred eleven million, forty-three thousand, forty".