1021142211450 has 48 divisors (see below), whose sum is σ = 2532496290816. Its totient is φ = 272297750400.

The previous prime is 1021142211449. The next prime is 1021142211493. The reversal of 1021142211450 is 541122411201.

It is a super-2 number, since 2×1021142211450² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1021142211450.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9411510 + ... + 9519390.

It is an arithmetic number, because the mean of its divisors is an integer number (52760339392).

Almost surely, 2^{1021142211450} is an apocalyptic number.

1021142211450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021142211450 is an abundant number, since it is smaller than the sum of its proper divisors (1511354079366).

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

1021142211450 is a wasteful number, since it uses less digits than its factorization.

1021142211450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170999 (or 170994 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

Adding to 1021142211450 its reverse (541122411201), we get a palindrome (1562264622651).

The spelling of 1021142211450 in words is "one trillion, twenty-one billion, one hundred forty-two million, two hundred eleven thousand, four hundred fifty".