1021021200122 has 64 divisors (see below), whose sum is σ = 1927126252800. Its totient is φ = 394130880000.

The previous prime is 1021021200083. The next prime is 1021021200161. The reversal of 1021021200122 is 2210021201201.

It is an interprime number because it is at equal distance from previous prime (1021021200083) and next prime (1021021200161).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1021021200097 and 1021021200106.

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, 8377622 + ... + 8498622.

It is an arithmetic number, because the mean of its divisors is an integer number (30111347700).

Almost surely, 2^{1021021200122} is an apocalyptic number.

1021021200122 is a deficient number, since it is larger than the sum of its proper divisors (906105052678).

1021021200122 is a wasteful number, since it uses less digits than its factorization.

1021021200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121527.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1021021200122 its reverse (2210021201201), we get a palindrome (3231042401323).

The spelling of 1021021200122 in words is "one trillion, twenty-one billion, twenty-one million, two hundred thousand, one hundred twenty-two".