1002120020190 has 48 divisors (see below), whose sum is σ = 2675931306048. Its totient is φ = 260009517888.

The previous prime is 1002120020159. The next prime is 1002120020197. The reversal of 1002120020190 is 910200212001.

It is a super-2 number, since 2×1002120020190² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002120020197) 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, 150465142 + ... + 150471801.

It is an arithmetic number, because the mean of its divisors is an integer number (55748568876).

Almost surely, 2^{1002120020190} is an apocalyptic number.

1002120020190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1002120020190 is an abundant number, since it is smaller than the sum of its proper divisors (1673811285858).

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

1002120020190 is a wasteful number, since it uses less digits than its factorization.

1002120020190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300936993 (or 300936990 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1002120020190 its reverse (910200212001), we get a palindrome (1912320232191).

The spelling of 1002120020190 in words is "one trillion, two billion, one hundred twenty million, twenty thousand, one hundred ninety".