1223020021040 has 40 divisors (see below), whose sum is σ = 2843767235760. Its totient is φ = 489165739776.

The previous prime is 1223020020973. The next prime is 1223020021103. The reversal of 1223020021040 is 401200203221.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×1223020021040³ (a number of 37 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279551 + ... + 1588769.

It is an arithmetic number, because the mean of its divisors is an integer number (71094180894).

Almost surely, 2^{1223020021040} is an apocalyptic number.

1223020021040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223020021040 is an abundant number, since it is smaller than the sum of its proper divisors (1620747214720).

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

1223020021040 is a wasteful number, since it uses less digits than its factorization.

1223020021040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320909 (or 1320903 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 1223020021040 its reverse (401200203221), we get a palindrome (1624220224261).

The spelling of 1223020021040 in words is "one trillion, two hundred twenty-three billion, twenty million, twenty-one thousand, forty".